21206523

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{6883}}^1$

素因数の和:6978

約数の個数: 16

約数和(自身を含む): 30840320

約数和(自身を除く): 9633797

約数列:

[1, 3, 13, 39, 79, 237, 1027, 3081, 6883, 20649, 89479, 268437, 543757, 1631271, 7068841, 21206523]

約数ペア:

[(1, 21206523), (3, 7068841), (13, 1631271), (39, 543757), (79, 268437), (237, 89479), (1027, 20649), (3081, 6883)]