25405990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 49734000

約数和(自身を除く): 24328010

約数列:

[1, 2, 5, 10, 17, 34, 59, 85, 118, 149, 170, 289, 295, 298, 578, 590, 745, 1003, 1445, 1490, 2006, 2533, 2890, 5015, 5066, 8791, 10030, 12665, 17051, 17582, 25330, 34102, 43061, 43955, 85255, 86122, 87910, 149447, 170510, 215305, 298894, 430610, 747235, 1494470, 2540599, 5081198, 12702995, 25405990]

約数ペア:

[(1, 25405990), (2, 12702995), (5, 5081198), (10, 2540599), (17, 1494470), (34, 747235), (59, 430610), (85, 298894), (118, 215305), (149, 170510), (170, 149447), (289, 87910), (295, 86122), (298, 85255), (578, 43955), (590, 43061), (745, 34102), (1003, 25330), (1445, 17582), (1490, 17051), (2006, 12665), (2533, 10030), (2890, 8791), (5015, 5066)]