20639740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{4079}}^1$

素因数の和:4122

約数の個数: 48

約数和(自身を含む): 49351680

約数和(自身を除く): 28711940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 1012, 1265, 2530, 4079, 5060, 8158, 16316, 20395, 40790, 44869, 81580, 89738, 93817, 179476, 187634, 224345, 375268, 448690, 469085, 897380, 938170, 1031987, 1876340, 2063974, 4127948, 5159935, 10319870, 20639740]

約数ペア:

[(1, 20639740), (2, 10319870), (4, 5159935), (5, 4127948), (10, 2063974), (11, 1876340), (20, 1031987), (22, 938170), (23, 897380), (44, 469085), (46, 448690), (55, 375268), (92, 224345), (110, 187634), (115, 179476), (220, 93817), (230, 89738), (253, 81580), (460, 44869), (506, 40790), (1012, 20395), (1265, 16316), (2530, 8158), (4079, 5060)]