81115920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{997}}^1$

素因数の和:1129

約数の個数: 120

約数和(自身を含む): 275100696

約数和(自身を除く): 193984776

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 113, 120, 144, 180, 226, 240, 339, 360, 452, 565, 678, 720, 904, 997, 1017, 1130, 1356, 1695, 1808, 1994, 2034, 2260, 2712, 2991, 3390, 3988, 4068, 4520, 4985, 5085, 5424, 5982, 6780, 7976, 8136, 8973, 9040, 9970, 10170, 11964, 13560, 14955, 15952, 16272, 17946, 19940, 20340, 23928, 27120, 29910, 35892, 39880, 40680, 44865, 47856, 59820, 71784, 79760, 81360, 89730, 112661, 119640, 143568, 179460, 225322, 239280, 337983, 358920, 450644, 563305, 675966, 717840, 901288, 1013949, 1126610, 1351932, 1689915, 1802576, 2027898, 2253220, 2703864, 3379830, 4055796, 4506440, 5069745, 5407728, 6759660, 8111592, 9012880, 10139490, 13519320, 16223184, 20278980, 27038640, 40557960, 81115920]

約数ペア:

[(1, 81115920), (2, 40557960), (3, 27038640), (4, 20278980), (5, 16223184), (6, 13519320), (8, 10139490), (9, 9012880), (10, 8111592), (12, 6759660), (15, 5407728), (16, 5069745), (18, 4506440), (20, 4055796), (24, 3379830), (30, 2703864), (36, 2253220), (40, 2027898), (45, 1802576), (48, 1689915), (60, 1351932), (72, 1126610), (80, 1013949), (90, 901288), (113, 717840), (120, 675966), (144, 563305), (180, 450644), (226, 358920), (240, 337983), (339, 239280), (360, 225322), (452, 179460), (565, 143568), (678, 119640), (720, 112661), (904, 89730), (997, 81360), (1017, 79760), (1130, 71784), (1356, 59820), (1695, 47856), (1808, 44865), (1994, 40680), (2034, 39880), (2260, 35892), (2712, 29910), (2991, 27120), (3390, 23928), (3988, 20340), (4068, 19940), (4520, 17946), (4985, 16272), (5085, 15952), (5424, 14955), (5982, 13560), (6780, 11964), (7976, 10170), (8136, 9970), (8973, 9040)]