64882700

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:327

約数の個数: 72

約数和(自身を含む): 146657280

約数和(自身を除く): 81774580

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 79, 86, 100, 158, 172, 191, 215, 316, 382, 395, 430, 764, 790, 860, 955, 1075, 1580, 1910, 1975, 2150, 3397, 3820, 3950, 4300, 4775, 6794, 7900, 8213, 9550, 13588, 15089, 16426, 16985, 19100, 30178, 32852, 33970, 41065, 60356, 67940, 75445, 82130, 84925, 150890, 164260, 169850, 205325, 301780, 339700, 377225, 410650, 648827, 754450, 821300, 1297654, 1508900, 2595308, 3244135, 6488270, 12976540, 16220675, 32441350, 64882700]

約数ペア:

[(1, 64882700), (2, 32441350), (4, 16220675), (5, 12976540), (10, 6488270), (20, 3244135), (25, 2595308), (43, 1508900), (50, 1297654), (79, 821300), (86, 754450), (100, 648827), (158, 410650), (172, 377225), (191, 339700), (215, 301780), (316, 205325), (382, 169850), (395, 164260), (430, 150890), (764, 84925), (790, 82130), (860, 75445), (955, 67940), (1075, 60356), (1580, 41065), (1910, 33970), (1975, 32852), (2150, 30178), (3397, 19100), (3820, 16985), (3950, 16426), (4300, 15089), (4775, 13588), (6794, 9550), (7900, 8213)]