20658850

素因数分解:

$2^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:267

約数の個数: 48

約数和(自身を含む): 40176000

約数和(自身を除く): 19517150

約数列:

[1, 2, 5, 10, 25, 47, 50, 59, 94, 118, 149, 235, 295, 298, 470, 590, 745, 1175, 1475, 1490, 2350, 2773, 2950, 3725, 5546, 7003, 7450, 8791, 13865, 14006, 17582, 27730, 35015, 43955, 69325, 70030, 87910, 138650, 175075, 219775, 350150, 413177, 439550, 826354, 2065885, 4131770, 10329425, 20658850]

約数ペア:

[(1, 20658850), (2, 10329425), (5, 4131770), (10, 2065885), (25, 826354), (47, 439550), (50, 413177), (59, 350150), (94, 219775), (118, 175075), (149, 138650), (235, 87910), (295, 70030), (298, 69325), (470, 43955), (590, 35015), (745, 27730), (1175, 17582), (1475, 14006), (1490, 13865), (2350, 8791), (2773, 7450), (2950, 7003), (3725, 5546)]