21178323

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{1531}}^1$

素因数の和:1619

約数の個数: 24

約数和(自身を含む): 32263920

約数和(自身を除く): 11085597

約数列:

[1, 3, 9, 29, 53, 87, 159, 261, 477, 1531, 1537, 4593, 4611, 13779, 13833, 44399, 81143, 133197, 243429, 399591, 730287, 2353147, 7059441, 21178323]

約数ペア:

[(1, 21178323), (3, 7059441), (9, 2353147), (29, 730287), (53, 399591), (87, 243429), (159, 133197), (261, 81143), (477, 44399), (1531, 13833), (1537, 13779), (4593, 4611)]