21121295

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{6131}}^1$

素因数の和:6202

約数の個数: 16

約数和(自身を含む): 27814752

約数和(自身を除く): 6693457

約数列:

[1, 5, 13, 53, 65, 265, 689, 3445, 6131, 30655, 79703, 324943, 398515, 1624715, 4224259, 21121295]

約数ペア:

[(1, 21121295), (5, 4224259), (13, 1624715), (53, 398515), (65, 324943), (265, 79703), (689, 30655), (3445, 6131)]