20987300

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{7237}}^1$

素因数の和:7280

約数の個数: 36

約数和(自身を含む): 47119380

約数和(自身を除く): 26132080

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 290, 580, 725, 1450, 2900, 7237, 14474, 28948, 36185, 72370, 144740, 180925, 209873, 361850, 419746, 723700, 839492, 1049365, 2098730, 4197460, 5246825, 10493650, 20987300]

約数ペア:

[(1, 20987300), (2, 10493650), (4, 5246825), (5, 4197460), (10, 2098730), (20, 1049365), (25, 839492), (29, 723700), (50, 419746), (58, 361850), (100, 209873), (116, 180925), (145, 144740), (290, 72370), (580, 36185), (725, 28948), (1450, 14474), (2900, 7237)]