21005170

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{293}}^1$

素因数の和:474

約数の個数: 32

約数和(自身を含む): 38864448

約数和(自身を除く): 17859278

約数列:

[1, 2, 5, 10, 67, 107, 134, 214, 293, 335, 535, 586, 670, 1070, 1465, 2930, 7169, 14338, 19631, 31351, 35845, 39262, 62702, 71690, 98155, 156755, 196310, 313510, 2100517, 4201034, 10502585, 21005170]

約数ペア:

[(1, 21005170), (2, 10502585), (5, 4201034), (10, 2100517), (67, 313510), (107, 196310), (134, 156755), (214, 98155), (293, 71690), (335, 62702), (535, 39262), (586, 35845), (670, 31351), (1070, 19631), (1465, 14338), (2930, 7169)]