201725990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{521}}^1\times {\mathrm{1249}}^1$

素因数の和:1808

約数の個数: 32

約数和(自身を含む): 375840000

約数和(自身を除く): 174114010

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 521, 1042, 1249, 2498, 2605, 5210, 6245, 12490, 16151, 32302, 38719, 77438, 80755, 161510, 193595, 387190, 650729, 1301458, 3253645, 6507290, 20172599, 40345198, 100862995, 201725990]

約数ペア:

[(1, 201725990), (2, 100862995), (5, 40345198), (10, 20172599), (31, 6507290), (62, 3253645), (155, 1301458), (310, 650729), (521, 387190), (1042, 193595), (1249, 161510), (2498, 80755), (2605, 77438), (5210, 38719), (6245, 32302), (12490, 16151)]