21286130

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23917}}^1$

素因数の和:24013

約数の個数: 16

約数和(自身を含む): 38747160

約数和(自身を除く): 17461030

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 23917, 47834, 119585, 239170, 2128613, 4257226, 10643065, 21286130]

約数ペア:

[(1, 21286130), (2, 10643065), (5, 4257226), (10, 2128613), (89, 239170), (178, 119585), (445, 47834), (890, 23917)]