90312920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:636

約数の個数: 64

約数和(自身を含む): 211472640

約数和(自身を除く): 121159720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 173, 248, 310, 346, 421, 620, 692, 842, 865, 1240, 1384, 1684, 1730, 2105, 3368, 3460, 4210, 5363, 6920, 8420, 10726, 13051, 16840, 21452, 26102, 26815, 42904, 52204, 53630, 65255, 72833, 104408, 107260, 130510, 145666, 214520, 261020, 291332, 364165, 522040, 582664, 728330, 1456660, 2257823, 2913320, 4515646, 9031292, 11289115, 18062584, 22578230, 45156460, 90312920]

約数ペア:

[(1, 90312920), (2, 45156460), (4, 22578230), (5, 18062584), (8, 11289115), (10, 9031292), (20, 4515646), (31, 2913320), (40, 2257823), (62, 1456660), (124, 728330), (155, 582664), (173, 522040), (248, 364165), (310, 291332), (346, 261020), (421, 214520), (620, 145666), (692, 130510), (842, 107260), (865, 104408), (1240, 72833), (1384, 65255), (1684, 53630), (1730, 52204), (2105, 42904), (3368, 26815), (3460, 26102), (4210, 21452), (5363, 16840), (6920, 13051), (8420, 10726)]