27908990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{457}}^1$

素因数の和:692

約数の個数: 32

約数和(自身を含む): 52233984

約数和(自身を除く): 24324994

約数列:

[1, 2, 5, 10, 31, 62, 155, 197, 310, 394, 457, 914, 985, 1970, 2285, 4570, 6107, 12214, 14167, 28334, 30535, 61070, 70835, 90029, 141670, 180058, 450145, 900290, 2790899, 5581798, 13954495, 27908990]

約数ペア:

[(1, 27908990), (2, 13954495), (5, 5581798), (10, 2790899), (31, 900290), (62, 450145), (155, 180058), (197, 141670), (310, 90029), (394, 70835), (457, 61070), (914, 30535), (985, 28334), (1970, 14167), (2285, 12214), (4570, 6107)]