21206406

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{4457}}^1$

素因数の和:4536

約数の個数: 32

約数和(自身を含む): 46434528

約数和(自身を除く): 25228122

約数列:

[1, 2, 3, 6, 13, 26, 39, 61, 78, 122, 183, 366, 793, 1586, 2379, 4457, 4758, 8914, 13371, 26742, 57941, 115882, 173823, 271877, 347646, 543754, 815631, 1631262, 3534401, 7068802, 10603203, 21206406]

約数ペア:

[(1, 21206406), (2, 10603203), (3, 7068802), (6, 3534401), (13, 1631262), (26, 815631), (39, 543754), (61, 347646), (78, 271877), (122, 173823), (183, 115882), (366, 57941), (793, 26742), (1586, 13371), (2379, 8914), (4457, 4758)]