21677901

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19477}}^1$

素因数の和:19540

約数の個数: 16

約数和(自身を含む): 33657984

約数和(自身を除く): 11980083

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19477, 58431, 136339, 409017, 1032281, 3096843, 7225967, 21677901]

約数ペア:

[(1, 21677901), (3, 7225967), (7, 3096843), (21, 1032281), (53, 409017), (159, 136339), (371, 58431), (1113, 19477)]