21181998

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2617}}^1$

素因数の和:2712

約数の個数: 32

約数和(自身を含む): 45239040

約数和(自身を除く): 24057042

約数列:

[1, 2, 3, 6, 19, 38, 57, 71, 114, 142, 213, 426, 1349, 2617, 2698, 4047, 5234, 7851, 8094, 15702, 49723, 99446, 149169, 185807, 298338, 371614, 557421, 1114842, 3530333, 7060666, 10590999, 21181998]

約数ペア:

[(1, 21181998), (2, 10590999), (3, 7060666), (6, 3530333), (19, 1114842), (38, 557421), (57, 371614), (71, 298338), (114, 185807), (142, 149169), (213, 99446), (426, 49723), (1349, 15702), (2617, 8094), (2698, 7851), (4047, 5234)]