20618884

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:181

約数の個数: 72

約数和(自身を含む): 44576280

約数和(自身を除く): 23957396

約数列:

[1, 2, 4, 11, 13, 22, 26, 29, 44, 52, 58, 113, 116, 121, 143, 226, 242, 286, 319, 377, 452, 484, 572, 638, 754, 1243, 1276, 1469, 1508, 1573, 2486, 2938, 3146, 3277, 3509, 4147, 4972, 5876, 6292, 6554, 7018, 8294, 13108, 13673, 14036, 16159, 16588, 27346, 32318, 36047, 42601, 45617, 54692, 64636, 72094, 85202, 91234, 144188, 170404, 177749, 182468, 355498, 396517, 468611, 710996, 793034, 937222, 1586068, 1874444, 5154721, 10309442, 20618884]

約数ペア:

[(1, 20618884), (2, 10309442), (4, 5154721), (11, 1874444), (13, 1586068), (22, 937222), (26, 793034), (29, 710996), (44, 468611), (52, 396517), (58, 355498), (113, 182468), (116, 177749), (121, 170404), (143, 144188), (226, 91234), (242, 85202), (286, 72094), (319, 64636), (377, 54692), (452, 45617), (484, 42601), (572, 36047), (638, 32318), (754, 27346), (1243, 16588), (1276, 16159), (1469, 14036), (1508, 13673), (1573, 13108), (2486, 8294), (2938, 7018), (3146, 6554), (3277, 6292), (3509, 5876), (4147, 4972)]