18287980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31531}}^1$

素因数の和:31569

約数の個数: 24

約数和(自身を含む): 39730320

約数和(自身を除く): 21442340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 31531, 63062, 126124, 157655, 315310, 630620, 914399, 1828798, 3657596, 4571995, 9143990, 18287980]

約数ペア:

[(1, 18287980), (2, 9143990), (4, 4571995), (5, 3657596), (10, 1828798), (20, 914399), (29, 630620), (58, 315310), (116, 157655), (145, 126124), (290, 63062), (580, 31531)]