78447760

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{23917}}^1$

素因数の和:23971

約数の個数: 40

約数和(自身を含む): 186847416

約数和(自身を除く): 108399656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 23917, 47834, 95668, 119585, 191336, 239170, 382672, 478340, 956680, 980597, 1913360, 1961194, 3922388, 4902985, 7844776, 9805970, 15689552, 19611940, 39223880, 78447760]

約数ペア:

[(1, 78447760), (2, 39223880), (4, 19611940), (5, 15689552), (8, 9805970), (10, 7844776), (16, 4902985), (20, 3922388), (40, 1961194), (41, 1913360), (80, 980597), (82, 956680), (164, 478340), (205, 382672), (328, 239170), (410, 191336), (656, 119585), (820, 95668), (1640, 47834), (3280, 23917)]