81131680

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{677}}^1$

素因数の和:806

約数の個数: 96

約数和(自身を含む): 221429376

約数和(自身を除く): 140297696

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 107, 112, 140, 160, 214, 224, 280, 428, 535, 560, 677, 749, 856, 1070, 1120, 1354, 1498, 1712, 2140, 2708, 2996, 3385, 3424, 3745, 4280, 4739, 5416, 5992, 6770, 7490, 8560, 9478, 10832, 11984, 13540, 14980, 17120, 18956, 21664, 23695, 23968, 27080, 29960, 37912, 47390, 54160, 59920, 72439, 75824, 94780, 108320, 119840, 144878, 151648, 189560, 289756, 362195, 379120, 507073, 579512, 724390, 758240, 1014146, 1159024, 1448780, 2028292, 2318048, 2535365, 2897560, 4056584, 5070730, 5795120, 8113168, 10141460, 11590240, 16226336, 20282920, 40565840, 81131680]

約数ペア:

[(1, 81131680), (2, 40565840), (4, 20282920), (5, 16226336), (7, 11590240), (8, 10141460), (10, 8113168), (14, 5795120), (16, 5070730), (20, 4056584), (28, 2897560), (32, 2535365), (35, 2318048), (40, 2028292), (56, 1448780), (70, 1159024), (80, 1014146), (107, 758240), (112, 724390), (140, 579512), (160, 507073), (214, 379120), (224, 362195), (280, 289756), (428, 189560), (535, 151648), (560, 144878), (677, 119840), (749, 108320), (856, 94780), (1070, 75824), (1120, 72439), (1354, 59920), (1498, 54160), (1712, 47390), (2140, 37912), (2708, 29960), (2996, 27080), (3385, 23968), (3424, 23695), (3745, 21664), (4280, 18956), (4739, 17120), (5416, 14980), (5992, 13540), (6770, 11984), (7490, 10832), (8560, 9478)]