18991492

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{701}}^1$

素因数の和:1239

約数の個数: 24

約数和(自身を含む): 35911512

約数和(自身を除く): 16920020

約数列:

[1, 2, 4, 13, 26, 52, 521, 701, 1042, 1402, 2084, 2804, 6773, 9113, 13546, 18226, 27092, 36452, 365221, 730442, 1460884, 4747873, 9495746, 18991492]

約数ペア:

[(1, 18991492), (2, 9495746), (4, 4747873), (13, 1460884), (26, 730442), (52, 365221), (521, 36452), (701, 27092), (1042, 18226), (1402, 13546), (2084, 9113), (2804, 6773)]