21278752

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{991}}^1$

素因数の和:1073

約数の個数: 48

約数和(自身を含む): 46497024

約数和(自身を除く): 25218272

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 61, 88, 122, 176, 244, 352, 488, 671, 976, 991, 1342, 1952, 1982, 2684, 3964, 5368, 7928, 10736, 10901, 15856, 21472, 21802, 31712, 43604, 60451, 87208, 120902, 174416, 241804, 348832, 483608, 664961, 967216, 1329922, 1934432, 2659844, 5319688, 10639376, 21278752]

約数ペア:

[(1, 21278752), (2, 10639376), (4, 5319688), (8, 2659844), (11, 1934432), (16, 1329922), (22, 967216), (32, 664961), (44, 483608), (61, 348832), (88, 241804), (122, 174416), (176, 120902), (244, 87208), (352, 60451), (488, 43604), (671, 31712), (976, 21802), (991, 21472), (1342, 15856), (1952, 10901), (1982, 10736), (2684, 7928), (3964, 5368)]