20949840

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:139

約数の個数: 200

約数和(自身を含む): 75350088

約数和(自身を除く): 54400248

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 53, 54, 60, 61, 72, 80, 81, 90, 106, 108, 120, 122, 135, 144, 159, 162, 180, 183, 212, 216, 240, 244, 265, 270, 305, 318, 324, 360, 366, 405, 424, 432, 477, 488, 530, 540, 549, 610, 636, 648, 720, 732, 795, 810, 848, 915, 954, 976, 1060, 1080, 1098, 1220, 1272, 1296, 1431, 1464, 1590, 1620, 1647, 1830, 1908, 2120, 2160, 2196, 2385, 2440, 2544, 2745, 2862, 2928, 3180, 3233, 3240, 3294, 3660, 3816, 4240, 4293, 4392, 4770, 4880, 4941, 5490, 5724, 6360, 6466, 6480, 6588, 7155, 7320, 7632, 8235, 8586, 8784, 9540, 9699, 9882, 10980, 11448, 12720, 12932, 13176, 14310, 14640, 16165, 16470, 17172, 19080, 19398, 19764, 21465, 21960, 22896, 24705, 25864, 26352, 28620, 29097, 32330, 32940, 34344, 38160, 38796, 39528, 42930, 43920, 48495, 49410, 51728, 57240, 58194, 64660, 65880, 68688, 77592, 79056, 85860, 87291, 96990, 98820, 114480, 116388, 129320, 131760, 145485, 155184, 171720, 174582, 193980, 197640, 232776, 258640, 261873, 290970, 343440, 349164, 387960, 395280, 436455, 465552, 523746, 581940, 698328, 775920, 872910, 1047492, 1163880, 1309365, 1396656, 1745820, 2094984, 2327760, 2618730, 3491640, 4189968, 5237460, 6983280, 10474920, 20949840]

約数ペア:

[(1, 20949840), (2, 10474920), (3, 6983280), (4, 5237460), (5, 4189968), (6, 3491640), (8, 2618730), (9, 2327760), (10, 2094984), (12, 1745820), (15, 1396656), (16, 1309365), (18, 1163880), (20, 1047492), (24, 872910), (27, 775920), (30, 698328), (36, 581940), (40, 523746), (45, 465552), (48, 436455), (53, 395280), (54, 387960), (60, 349164), (61, 343440), (72, 290970), (80, 261873), (81, 258640), (90, 232776), (106, 197640), (108, 193980), (120, 174582), (122, 171720), (135, 155184), (144, 145485), (159, 131760), (162, 129320), (180, 116388), (183, 114480), (212, 98820), (216, 96990), (240, 87291), (244, 85860), (265, 79056), (270, 77592), (305, 68688), (318, 65880), (324, 64660), (360, 58194), (366, 57240), (405, 51728), (424, 49410), (432, 48495), (477, 43920), (488, 42930), (530, 39528), (540, 38796), (549, 38160), (610, 34344), (636, 32940), (648, 32330), (720, 29097), (732, 28620), (795, 26352), (810, 25864), (848, 24705), (915, 22896), (954, 21960), (976, 21465), (1060, 19764), (1080, 19398), (1098, 19080), (1220, 17172), (1272, 16470), (1296, 16165), (1431, 14640), (1464, 14310), (1590, 13176), (1620, 12932), (1647, 12720), (1830, 11448), (1908, 10980), (2120, 9882), (2160, 9699), (2196, 9540), (2385, 8784), (2440, 8586), (2544, 8235), (2745, 7632), (2862, 7320), (2928, 7155), (3180, 6588), (3233, 6480), (3240, 6466), (3294, 6360), (3660, 5724), (3816, 5490), (4240, 4941), (4293, 4880), (4392, 4770)]