51629440

素因数分解:

$2^7\times 5^1\times {\mathrm{80671}}^1$

素因数の和:80690

約数の個数: 32

約数和(自身を含む): 123428160

約数和(自身を除く): 71798720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 80671, 161342, 322684, 403355, 645368, 806710, 1290736, 1613420, 2581472, 3226840, 5162944, 6453680, 10325888, 12907360, 25814720, 51629440]

約数ペア:

[(1, 51629440), (2, 25814720), (4, 12907360), (5, 10325888), (8, 6453680), (10, 5162944), (16, 3226840), (20, 2581472), (32, 1613420), (40, 1290736), (64, 806710), (80, 645368), (128, 403355), (160, 322684), (320, 161342), (640, 80671)]