19728720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:130

約数の個数: 240

約数和(自身を含む): 75209472

約数和(自身を除く): 55480752

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 47, 48, 53, 55, 60, 66, 72, 80, 88, 90, 94, 99, 106, 110, 120, 132, 141, 144, 159, 165, 176, 180, 188, 198, 212, 220, 235, 240, 264, 265, 282, 318, 330, 360, 376, 396, 423, 424, 440, 470, 477, 495, 517, 528, 530, 564, 583, 636, 660, 705, 720, 752, 792, 795, 846, 848, 880, 940, 954, 990, 1034, 1060, 1128, 1166, 1272, 1320, 1410, 1551, 1584, 1590, 1692, 1749, 1880, 1908, 1980, 2068, 2115, 2120, 2256, 2332, 2385, 2491, 2544, 2585, 2640, 2820, 2915, 3102, 3180, 3384, 3498, 3760, 3816, 3960, 4136, 4230, 4240, 4653, 4664, 4770, 4982, 5170, 5247, 5640, 5830, 6204, 6360, 6768, 6996, 7473, 7632, 7755, 7920, 8272, 8460, 8745, 9306, 9328, 9540, 9964, 10340, 10494, 11280, 11660, 12408, 12455, 12720, 13992, 14946, 15510, 16920, 17490, 18612, 19080, 19928, 20680, 20988, 22419, 23265, 23320, 24816, 24910, 26235, 27401, 27984, 29892, 31020, 33840, 34980, 37224, 37365, 38160, 39856, 41360, 41976, 44838, 46530, 46640, 49820, 52470, 54802, 59784, 62040, 69960, 74448, 74730, 82203, 83952, 89676, 93060, 99640, 104940, 109604, 112095, 119568, 124080, 137005, 139920, 149460, 164406, 179352, 186120, 199280, 209880, 219208, 224190, 246609, 274010, 298920, 328812, 358704, 372240, 411015, 419760, 438416, 448380, 493218, 548020, 597840, 657624, 822030, 896760, 986436, 1096040, 1233045, 1315248, 1644060, 1793520, 1972872, 2192080, 2466090, 3288120, 3945744, 4932180, 6576240, 9864360, 19728720]

約数ペア:

[(1, 19728720), (2, 9864360), (3, 6576240), (4, 4932180), (5, 3945744), (6, 3288120), (8, 2466090), (9, 2192080), (10, 1972872), (11, 1793520), (12, 1644060), (15, 1315248), (16, 1233045), (18, 1096040), (20, 986436), (22, 896760), (24, 822030), (30, 657624), (33, 597840), (36, 548020), (40, 493218), (44, 448380), (45, 438416), (47, 419760), (48, 411015), (53, 372240), (55, 358704), (60, 328812), (66, 298920), (72, 274010), (80, 246609), (88, 224190), (90, 219208), (94, 209880), (99, 199280), (106, 186120), (110, 179352), (120, 164406), (132, 149460), (141, 139920), (144, 137005), (159, 124080), (165, 119568), (176, 112095), (180, 109604), (188, 104940), (198, 99640), (212, 93060), (220, 89676), (235, 83952), (240, 82203), (264, 74730), (265, 74448), (282, 69960), (318, 62040), (330, 59784), (360, 54802), (376, 52470), (396, 49820), (423, 46640), (424, 46530), (440, 44838), (470, 41976), (477, 41360), (495, 39856), (517, 38160), (528, 37365), (530, 37224), (564, 34980), (583, 33840), (636, 31020), (660, 29892), (705, 27984), (720, 27401), (752, 26235), (792, 24910), (795, 24816), (846, 23320), (848, 23265), (880, 22419), (940, 20988), (954, 20680), (990, 19928), (1034, 19080), (1060, 18612), (1128, 17490), (1166, 16920), (1272, 15510), (1320, 14946), (1410, 13992), (1551, 12720), (1584, 12455), (1590, 12408), (1692, 11660), (1749, 11280), (1880, 10494), (1908, 10340), (1980, 9964), (2068, 9540), (2115, 9328), (2120, 9306), (2256, 8745), (2332, 8460), (2385, 8272), (2491, 7920), (2544, 7755), (2585, 7632), (2640, 7473), (2820, 6996), (2915, 6768), (3102, 6360), (3180, 6204), (3384, 5830), (3498, 5640), (3760, 5247), (3816, 5170), (3960, 4982), (4136, 4770), (4230, 4664), (4240, 4653)]