21749156

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{809}}^1$

素因数の和:884

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 23973724

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 47, 52, 94, 143, 188, 286, 517, 572, 611, 809, 1034, 1222, 1618, 2068, 2444, 3236, 6721, 8899, 10517, 13442, 17798, 21034, 26884, 35596, 38023, 42068, 76046, 115687, 152092, 231374, 418253, 462748, 494299, 836506, 988598, 1673012, 1977196, 5437289, 10874578, 21749156]

約数ペア:

[(1, 21749156), (2, 10874578), (4, 5437289), (11, 1977196), (13, 1673012), (22, 988598), (26, 836506), (44, 494299), (47, 462748), (52, 418253), (94, 231374), (143, 152092), (188, 115687), (286, 76046), (517, 42068), (572, 38023), (611, 35596), (809, 26884), (1034, 21034), (1222, 17798), (1618, 13442), (2068, 10517), (2444, 8899), (3236, 6721)]