21752180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63977}}^1$

素因数の和:64003

約数の個数: 24

約数和(自身を含む): 48367368

約数和(自身を除く): 26615188

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63977, 127954, 255908, 319885, 639770, 1087609, 1279540, 2175218, 4350436, 5438045, 10876090, 21752180]

約数ペア:

[(1, 21752180), (2, 10876090), (4, 5438045), (5, 4350436), (10, 2175218), (17, 1279540), (20, 1087609), (34, 639770), (68, 319885), (85, 255908), (170, 127954), (340, 63977)]