81699740

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1\times {\mathrm{401}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 175863744

約数和(自身を除く): 94164004

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 167, 244, 305, 334, 401, 610, 668, 802, 835, 1220, 1604, 1670, 2005, 3340, 4010, 8020, 10187, 20374, 24461, 40748, 48922, 50935, 66967, 97844, 101870, 122305, 133934, 203740, 244610, 267868, 334835, 489220, 669670, 1339340, 4084987, 8169974, 16339948, 20424935, 40849870, 81699740]

約数ペア:

[(1, 81699740), (2, 40849870), (4, 20424935), (5, 16339948), (10, 8169974), (20, 4084987), (61, 1339340), (122, 669670), (167, 489220), (244, 334835), (305, 267868), (334, 244610), (401, 203740), (610, 133934), (668, 122305), (802, 101870), (835, 97844), (1220, 66967), (1604, 50935), (1670, 48922), (2005, 40748), (3340, 24461), (4010, 20374), (8020, 10187)]