20986650

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{149}}^1\times {\mathrm{313}}^1$

素因数の和:480

約数の個数: 72

約数和(自身を含む): 56943900

約数和(自身を除く): 35957250

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 149, 150, 225, 298, 313, 447, 450, 626, 745, 894, 939, 1341, 1490, 1565, 1878, 2235, 2682, 2817, 3130, 3725, 4470, 4695, 5634, 6705, 7450, 7825, 9390, 11175, 13410, 14085, 15650, 22350, 23475, 28170, 33525, 46637, 46950, 67050, 70425, 93274, 139911, 140850, 233185, 279822, 419733, 466370, 699555, 839466, 1165925, 1399110, 2098665, 2331850, 3497775, 4197330, 6995550, 10493325, 20986650]

約数ペア:

[(1, 20986650), (2, 10493325), (3, 6995550), (5, 4197330), (6, 3497775), (9, 2331850), (10, 2098665), (15, 1399110), (18, 1165925), (25, 839466), (30, 699555), (45, 466370), (50, 419733), (75, 279822), (90, 233185), (149, 140850), (150, 139911), (225, 93274), (298, 70425), (313, 67050), (447, 46950), (450, 46637), (626, 33525), (745, 28170), (894, 23475), (939, 22350), (1341, 15650), (1490, 14085), (1565, 13410), (1878, 11175), (2235, 9390), (2682, 7825), (2817, 7450), (3130, 6705), (3725, 5634), (4470, 4695)]