21476590

素因数分解:

$2^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{409}}^1$

素因数の和:564

約数の個数: 32

約数和(自身を含む): 39852000

約数和(自身を除く): 18375410

約数列:

[1, 2, 5, 10, 59, 89, 118, 178, 295, 409, 445, 590, 818, 890, 2045, 4090, 5251, 10502, 24131, 26255, 36401, 48262, 52510, 72802, 120655, 182005, 241310, 364010, 2147659, 4295318, 10738295, 21476590]

約数ペア:

[(1, 21476590), (2, 10738295), (5, 4295318), (10, 2147659), (59, 364010), (89, 241310), (118, 182005), (178, 120655), (295, 72802), (409, 52510), (445, 48262), (590, 36401), (818, 26255), (890, 24131), (2045, 10502), (4090, 5251)]