881038640

素因数分解:

$2^4\times 5^1\times {\mathrm{991}}^1\times {\mathrm{11113}}^1$

素因数の和:12117

約数の個数: 40

約数和(自身を含む): 2050666368

約数和(自身を除く): 1169627728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 991, 1982, 3964, 4955, 7928, 9910, 11113, 15856, 19820, 22226, 39640, 44452, 55565, 79280, 88904, 111130, 177808, 222260, 444520, 889040, 11012983, 22025966, 44051932, 55064915, 88103864, 110129830, 176207728, 220259660, 440519320, 881038640]

約数ペア:

[(1, 881038640), (2, 440519320), (4, 220259660), (5, 176207728), (8, 110129830), (10, 88103864), (16, 55064915), (20, 44051932), (40, 22025966), (80, 11012983), (991, 889040), (1982, 444520), (3964, 222260), (4955, 177808), (7928, 111130), (9910, 88904), (11113, 79280), (15856, 55565), (19820, 44452), (22226, 39640)]