20405850

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{4691}}^1$

素因数の和:4735

約数の個数: 48

約数和(自身を含む): 52362720

約数和(自身を除く): 31956870

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 29, 30, 50, 58, 75, 87, 145, 150, 174, 290, 435, 725, 870, 1450, 2175, 4350, 4691, 9382, 14073, 23455, 28146, 46910, 70365, 117275, 136039, 140730, 234550, 272078, 351825, 408117, 680195, 703650, 816234, 1360390, 2040585, 3400975, 4081170, 6801950, 10202925, 20405850]

約数ペア:

[(1, 20405850), (2, 10202925), (3, 6801950), (5, 4081170), (6, 3400975), (10, 2040585), (15, 1360390), (25, 816234), (29, 703650), (30, 680195), (50, 408117), (58, 351825), (75, 272078), (87, 234550), (145, 140730), (150, 136039), (174, 117275), (290, 70365), (435, 46910), (725, 28146), (870, 23455), (1450, 14073), (2175, 9382), (4350, 4691)]