21991293

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{977}}^1$

素因数の和:1085

約数の個数: 24

約数和(自身を含む): 33107256

約数和(自身を除く): 11115963

約数列:

[1, 3, 9, 41, 61, 123, 183, 369, 549, 977, 2501, 2931, 7503, 8793, 22509, 40057, 59597, 120171, 178791, 360513, 536373, 2443477, 7330431, 21991293]

約数ペア:

[(1, 21991293), (3, 7330431), (9, 2443477), (41, 536373), (61, 360513), (123, 178791), (183, 120171), (369, 59597), (549, 40057), (977, 22509), (2501, 8793), (2931, 7503)]