16978715

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{277}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 23538816

約数和(自身を除く): 6560101

約数列:

[1, 5, 13, 23, 41, 65, 115, 205, 277, 299, 533, 943, 1385, 1495, 2665, 3601, 4715, 6371, 11357, 12259, 18005, 31855, 56785, 61295, 82823, 147641, 261211, 414115, 738205, 1306055, 3395743, 16978715]

約数ペア:

[(1, 16978715), (5, 3395743), (13, 1306055), (23, 738205), (41, 414115), (65, 261211), (115, 147641), (205, 82823), (277, 61295), (299, 56785), (533, 31855), (943, 18005), (1385, 12259), (1495, 11357), (2665, 6371), (3601, 4715)]