19518840

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:115

約数の個数: 256

約数和(自身を含む): 74649600

約数和(自身を除く): 55130760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 27, 30, 31, 33, 36, 40, 44, 45, 53, 54, 55, 60, 62, 66, 72, 88, 90, 93, 99, 106, 108, 110, 120, 124, 132, 135, 155, 159, 165, 180, 186, 198, 212, 216, 220, 248, 264, 265, 270, 279, 297, 310, 318, 330, 341, 360, 372, 396, 424, 440, 465, 477, 495, 530, 540, 558, 583, 594, 620, 636, 660, 682, 744, 792, 795, 837, 930, 954, 990, 1023, 1060, 1080, 1116, 1166, 1188, 1240, 1272, 1320, 1364, 1395, 1431, 1485, 1590, 1643, 1674, 1705, 1749, 1860, 1908, 1980, 2046, 2120, 2232, 2332, 2376, 2385, 2728, 2790, 2862, 2915, 2970, 3069, 3180, 3286, 3348, 3410, 3498, 3720, 3816, 3960, 4092, 4185, 4664, 4770, 4929, 5115, 5247, 5580, 5724, 5830, 5940, 6138, 6360, 6572, 6696, 6820, 6996, 7155, 8184, 8215, 8370, 8745, 9207, 9540, 9858, 10230, 10494, 11160, 11448, 11660, 11880, 12276, 13144, 13640, 13992, 14310, 14787, 15345, 15741, 16430, 16740, 17490, 18073, 18414, 19080, 19716, 20460, 20988, 23320, 24552, 24645, 26235, 28620, 29574, 30690, 31482, 32860, 33480, 34980, 36146, 36828, 39432, 40920, 41976, 44361, 46035, 49290, 52470, 54219, 57240, 59148, 61380, 62964, 65720, 69960, 72292, 73656, 73935, 78705, 88722, 90365, 92070, 98580, 104940, 108438, 118296, 122760, 125928, 144584, 147870, 157410, 162657, 177444, 180730, 184140, 197160, 209880, 216876, 221805, 271095, 295740, 314820, 325314, 354888, 361460, 368280, 433752, 443610, 487971, 542190, 591480, 629640, 650628, 722920, 813285, 887220, 975942, 1084380, 1301256, 1626570, 1774440, 1951884, 2168760, 2439855, 3253140, 3903768, 4879710, 6506280, 9759420, 19518840]

約数ペア:

[(1, 19518840), (2, 9759420), (3, 6506280), (4, 4879710), (5, 3903768), (6, 3253140), (8, 2439855), (9, 2168760), (10, 1951884), (11, 1774440), (12, 1626570), (15, 1301256), (18, 1084380), (20, 975942), (22, 887220), (24, 813285), (27, 722920), (30, 650628), (31, 629640), (33, 591480), (36, 542190), (40, 487971), (44, 443610), (45, 433752), (53, 368280), (54, 361460), (55, 354888), (60, 325314), (62, 314820), (66, 295740), (72, 271095), (88, 221805), (90, 216876), (93, 209880), (99, 197160), (106, 184140), (108, 180730), (110, 177444), (120, 162657), (124, 157410), (132, 147870), (135, 144584), (155, 125928), (159, 122760), (165, 118296), (180, 108438), (186, 104940), (198, 98580), (212, 92070), (216, 90365), (220, 88722), (248, 78705), (264, 73935), (265, 73656), (270, 72292), (279, 69960), (297, 65720), (310, 62964), (318, 61380), (330, 59148), (341, 57240), (360, 54219), (372, 52470), (396, 49290), (424, 46035), (440, 44361), (465, 41976), (477, 40920), (495, 39432), (530, 36828), (540, 36146), (558, 34980), (583, 33480), (594, 32860), (620, 31482), (636, 30690), (660, 29574), (682, 28620), (744, 26235), (792, 24645), (795, 24552), (837, 23320), (930, 20988), (954, 20460), (990, 19716), (1023, 19080), (1060, 18414), (1080, 18073), (1116, 17490), (1166, 16740), (1188, 16430), (1240, 15741), (1272, 15345), (1320, 14787), (1364, 14310), (1395, 13992), (1431, 13640), (1485, 13144), (1590, 12276), (1643, 11880), (1674, 11660), (1705, 11448), (1749, 11160), (1860, 10494), (1908, 10230), (1980, 9858), (2046, 9540), (2120, 9207), (2232, 8745), (2332, 8370), (2376, 8215), (2385, 8184), (2728, 7155), (2790, 6996), (2862, 6820), (2915, 6696), (2970, 6572), (3069, 6360), (3180, 6138), (3286, 5940), (3348, 5830), (3410, 5724), (3498, 5580), (3720, 5247), (3816, 5115), (3960, 4929), (4092, 4770), (4185, 4664)]