19991680917

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{16249}}^1\times {\mathrm{31547}}^1$

素因数の和:47812

約数の個数: 16

約数和(自身を含む): 28708680000

約数和(自身を除く): 8716999083

約数列:

[1, 3, 13, 39, 16249, 31547, 48747, 94641, 211237, 410111, 633711, 1230333, 512607203, 1537821609, 6663893639, 19991680917]

約数ペア:

[(1, 19991680917), (3, 6663893639), (13, 1537821609), (39, 512607203), (16249, 1230333), (31547, 633711), (48747, 410111), (94641, 211237)]