21408579

素因数分解:

$3^2\times {\mathrm{97}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1$

素因数の和:419

約数の個数: 24

約数和(自身を含む): 31646160

約数和(自身を除く): 10237581

約数列:

[1, 3, 9, 97, 137, 179, 291, 411, 537, 873, 1233, 1611, 13289, 17363, 24523, 39867, 52089, 73569, 119601, 156267, 220707, 2378731, 7136193, 21408579]

約数ペア:

[(1, 21408579), (3, 7136193), (9, 2378731), (97, 220707), (137, 156267), (179, 119601), (291, 73569), (411, 52089), (537, 39867), (873, 24523), (1233, 17363), (1611, 13289)]