20897331

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1867}}^1$

素因数の和:1931

約数の個数: 32

約数和(自身を含む): 35148288

約数和(自身を除く): 14250957

約数列:

[1, 3, 7, 13, 21, 39, 41, 91, 123, 273, 287, 533, 861, 1599, 1867, 3731, 5601, 11193, 13069, 24271, 39207, 72813, 76547, 169897, 229641, 509691, 535829, 995111, 1607487, 2985333, 6965777, 20897331]

約数ペア:

[(1, 20897331), (3, 6965777), (7, 2985333), (13, 1607487), (21, 995111), (39, 535829), (41, 509691), (91, 229641), (123, 169897), (273, 76547), (287, 72813), (533, 39207), (861, 24271), (1599, 13069), (1867, 11193), (3731, 5601)]