89788520

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{3491}}^1$

素因数の和:4145

約数の個数: 32

約数和(自身を含む): 202396320

約数和(自身を除く): 112607800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 3491, 5144, 6430, 6982, 12860, 13964, 17455, 25720, 27928, 34910, 69820, 139640, 2244713, 4489426, 8978852, 11223565, 17957704, 22447130, 44894260, 89788520]

約数ペア:

[(1, 89788520), (2, 44894260), (4, 22447130), (5, 17957704), (8, 11223565), (10, 8978852), (20, 4489426), (40, 2244713), (643, 139640), (1286, 69820), (2572, 34910), (3215, 27928), (3491, 25720), (5144, 17455), (6430, 13964), (6982, 12860)]