20634160

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6971}}^1$

素因数の和:7021

約数の個数: 40

約数和(自身を含む): 49278096

約数和(自身を除く): 28643936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 6971, 13942, 27884, 34855, 55768, 69710, 111536, 139420, 257927, 278840, 515854, 557680, 1031708, 1289635, 2063416, 2579270, 4126832, 5158540, 10317080, 20634160]

約数ペア:

[(1, 20634160), (2, 10317080), (4, 5158540), (5, 4126832), (8, 2579270), (10, 2063416), (16, 1289635), (20, 1031708), (37, 557680), (40, 515854), (74, 278840), (80, 257927), (148, 139420), (185, 111536), (296, 69710), (370, 55768), (592, 34855), (740, 27884), (1480, 13942), (2960, 6971)]