90990890

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{7159}}^1$

素因数の和:7238

約数の個数: 32

約数和(自身を含む): 173214720

約数和(自身を除く): 82223830

約数列:

[1, 2, 5, 10, 31, 41, 62, 82, 155, 205, 310, 410, 1271, 2542, 6355, 7159, 12710, 14318, 35795, 71590, 221929, 293519, 443858, 587038, 1109645, 1467595, 2219290, 2935190, 9099089, 18198178, 45495445, 90990890]

約数ペア:

[(1, 90990890), (2, 45495445), (5, 18198178), (10, 9099089), (31, 2935190), (41, 2219290), (62, 1467595), (82, 1109645), (155, 587038), (205, 443858), (310, 293519), (410, 221929), (1271, 71590), (2542, 35795), (6355, 14318), (7159, 12710)]