81775840

素因数分解:

$2^5\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4523}}^1$

素因数の和:4651

約数の個数: 48

約数和(自身を含む): 194948208

約数和(自身を除く): 113172368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 113, 160, 226, 452, 565, 904, 1130, 1808, 2260, 3616, 4520, 4523, 9040, 9046, 18080, 18092, 22615, 36184, 45230, 72368, 90460, 144736, 180920, 361840, 511099, 723680, 1022198, 2044396, 2555495, 4088792, 5110990, 8177584, 10221980, 16355168, 20443960, 40887920, 81775840]

約数ペア:

[(1, 81775840), (2, 40887920), (4, 20443960), (5, 16355168), (8, 10221980), (10, 8177584), (16, 5110990), (20, 4088792), (32, 2555495), (40, 2044396), (80, 1022198), (113, 723680), (160, 511099), (226, 361840), (452, 180920), (565, 144736), (904, 90460), (1130, 72368), (1808, 45230), (2260, 36184), (3616, 22615), (4520, 18092), (4523, 18080), (9040, 9046)]