21142178

素因数分解:

$2^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1\times {\mathrm{1289}}^1$

素因数の和:1489

約数の個数: 16

約数和(自身を含む): 32508000

約数和(自身を除く): 11365822

約数列:

[1, 2, 59, 118, 139, 278, 1289, 2578, 8201, 16402, 76051, 152102, 179171, 358342, 10571089, 21142178]

約数ペア:

[(1, 21142178), (2, 10571089), (59, 358342), (118, 179171), (139, 152102), (278, 76051), (1289, 16402), (2578, 8201)]