28156990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1489}}^1$

素因数の和:1588

約数の個数: 32

約数和(自身を含む): 53210880

約数和(自身を除く): 25053890

約数列:

[1, 2, 5, 10, 31, 61, 62, 122, 155, 305, 310, 610, 1489, 1891, 2978, 3782, 7445, 9455, 14890, 18910, 46159, 90829, 92318, 181658, 230795, 454145, 461590, 908290, 2815699, 5631398, 14078495, 28156990]

約数ペア:

[(1, 28156990), (2, 14078495), (5, 5631398), (10, 2815699), (31, 908290), (61, 461590), (62, 454145), (122, 230795), (155, 181658), (305, 92318), (310, 90829), (610, 46159), (1489, 18910), (1891, 14890), (2978, 9455), (3782, 7445)]