19979908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{1723}}^1$

素因数の和:1963

約数の個数: 24

約数和(自身を含む): 37845248

約数和(自身を除く): 17865340

約数列:

[1, 2, 4, 13, 26, 52, 223, 446, 892, 1723, 2899, 3446, 5798, 6892, 11596, 22399, 44798, 89596, 384229, 768458, 1536916, 4994977, 9989954, 19979908]

約数ペア:

[(1, 19979908), (2, 9989954), (4, 4994977), (13, 1536916), (26, 768458), (52, 384229), (223, 89596), (446, 44798), (892, 22399), (1723, 11596), (2899, 6892), (3446, 5798)]