4278760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2609}}^1$

素因数の和:2661

約数の個数: 32

約数和(自身を含む): 9865800

約数和(自身を除く): 5587040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 2609, 5218, 10436, 13045, 20872, 26090, 52180, 104360, 106969, 213938, 427876, 534845, 855752, 1069690, 2139380, 4278760]

約数ペア:

[(1, 4278760), (2, 2139380), (4, 1069690), (5, 855752), (8, 534845), (10, 427876), (20, 213938), (40, 106969), (41, 104360), (82, 52180), (164, 26090), (205, 20872), (328, 13045), (410, 10436), (820, 5218), (1640, 2609)]