291260440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{137387}}^1$

素因数の和:137451

約数の個数: 32

約数和(自身を含む): 667705680

約数和(自身を除く): 376445240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 137387, 274774, 549548, 686935, 1099096, 1373870, 2747740, 5495480, 7281511, 14563022, 29126044, 36407555, 58252088, 72815110, 145630220, 291260440]

約数ペア:

[(1, 291260440), (2, 145630220), (4, 72815110), (5, 58252088), (8, 36407555), (10, 29126044), (20, 14563022), (40, 7281511), (53, 5495480), (106, 2747740), (212, 1373870), (265, 1099096), (424, 686935), (530, 549548), (1060, 274774), (2120, 137387)]