21428760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{283}}^1\times {\mathrm{631}}^1$

素因数の和:928

約数の個数: 64

約数和(自身を含む): 64615680

約数和(自身を除く): 43186920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 283, 566, 631, 849, 1132, 1262, 1415, 1698, 1893, 2264, 2524, 2830, 3155, 3396, 3786, 4245, 5048, 5660, 6310, 6792, 7572, 8490, 9465, 11320, 12620, 15144, 16980, 18930, 25240, 33960, 37860, 75720, 178573, 357146, 535719, 714292, 892865, 1071438, 1428584, 1785730, 2142876, 2678595, 3571460, 4285752, 5357190, 7142920, 10714380, 21428760]

約数ペア:

[(1, 21428760), (2, 10714380), (3, 7142920), (4, 5357190), (5, 4285752), (6, 3571460), (8, 2678595), (10, 2142876), (12, 1785730), (15, 1428584), (20, 1071438), (24, 892865), (30, 714292), (40, 535719), (60, 357146), (120, 178573), (283, 75720), (566, 37860), (631, 33960), (849, 25240), (1132, 18930), (1262, 16980), (1415, 15144), (1698, 12620), (1893, 11320), (2264, 9465), (2524, 8490), (2830, 7572), (3155, 6792), (3396, 6310), (3786, 5660), (4245, 5048)]