205166680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{165457}}^1$

素因数の和:165499

約数の個数: 32

約数和(自身を含む): 476519040

約数和(自身を除く): 271352360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 165457, 330914, 661828, 827285, 1323656, 1654570, 3309140, 5129167, 6618280, 10258334, 20516668, 25645835, 41033336, 51291670, 102583340, 205166680]

約数ペア:

[(1, 205166680), (2, 102583340), (4, 51291670), (5, 41033336), (8, 25645835), (10, 20516668), (20, 10258334), (31, 6618280), (40, 5129167), (62, 3309140), (124, 1654570), (155, 1323656), (248, 827285), (310, 661828), (620, 330914), (1240, 165457)]