180625840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:638

約数の個数: 80

約数和(自身を含む): 437043456

約数和(自身を除く): 256417616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 173, 248, 310, 346, 421, 496, 620, 692, 842, 865, 1240, 1384, 1684, 1730, 2105, 2480, 2768, 3368, 3460, 4210, 5363, 6736, 6920, 8420, 10726, 13051, 13840, 16840, 21452, 26102, 26815, 33680, 42904, 52204, 53630, 65255, 72833, 85808, 104408, 107260, 130510, 145666, 208816, 214520, 261020, 291332, 364165, 429040, 522040, 582664, 728330, 1044080, 1165328, 1456660, 2257823, 2913320, 4515646, 5826640, 9031292, 11289115, 18062584, 22578230, 36125168, 45156460, 90312920, 180625840]

約数ペア:

[(1, 180625840), (2, 90312920), (4, 45156460), (5, 36125168), (8, 22578230), (10, 18062584), (16, 11289115), (20, 9031292), (31, 5826640), (40, 4515646), (62, 2913320), (80, 2257823), (124, 1456660), (155, 1165328), (173, 1044080), (248, 728330), (310, 582664), (346, 522040), (421, 429040), (496, 364165), (620, 291332), (692, 261020), (842, 214520), (865, 208816), (1240, 145666), (1384, 130510), (1684, 107260), (1730, 104408), (2105, 85808), (2480, 72833), (2768, 65255), (3368, 53630), (3460, 52204), (4210, 42904), (5363, 33680), (6736, 26815), (6920, 26102), (8420, 21452), (10726, 16840), (13051, 13840)]