221308840

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{149533}}^1$

素因数の和:149581

約数の個数: 32

約数和(自身を含む): 511406280

約数和(自身を除く): 290097440

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 149533, 299066, 598132, 747665, 1196264, 1495330, 2990660, 5532721, 5981320, 11065442, 22130884, 27663605, 44261768, 55327210, 110654420, 221308840]

約数ペア:

[(1, 221308840), (2, 110654420), (4, 55327210), (5, 44261768), (8, 27663605), (10, 22130884), (20, 11065442), (37, 5981320), (40, 5532721), (74, 2990660), (148, 1495330), (185, 1196264), (296, 747665), (370, 598132), (740, 299066), (1480, 149533)]