21620950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:122

約数の個数: 96

約数和(自身を含む): 47496960

約数和(自身を除く): 25876010

約数列:

[1, 2, 5, 10, 13, 25, 26, 29, 31, 37, 50, 58, 62, 65, 74, 130, 145, 155, 185, 290, 310, 325, 370, 377, 403, 481, 650, 725, 754, 775, 806, 899, 925, 962, 1073, 1147, 1450, 1550, 1798, 1850, 1885, 2015, 2146, 2294, 2405, 3770, 4030, 4495, 4810, 5365, 5735, 8990, 9425, 10075, 10730, 11470, 11687, 12025, 13949, 14911, 18850, 20150, 22475, 23374, 24050, 26825, 27898, 28675, 29822, 33263, 44950, 53650, 57350, 58435, 66526, 69745, 74555, 116870, 139490, 149110, 166315, 292175, 332630, 348725, 372775, 432419, 584350, 697450, 745550, 831575, 864838, 1663150, 2162095, 4324190, 10810475, 21620950]

約数ペア:

[(1, 21620950), (2, 10810475), (5, 4324190), (10, 2162095), (13, 1663150), (25, 864838), (26, 831575), (29, 745550), (31, 697450), (37, 584350), (50, 432419), (58, 372775), (62, 348725), (65, 332630), (74, 292175), (130, 166315), (145, 149110), (155, 139490), (185, 116870), (290, 74555), (310, 69745), (325, 66526), (370, 58435), (377, 57350), (403, 53650), (481, 44950), (650, 33263), (725, 29822), (754, 28675), (775, 27898), (806, 26825), (899, 24050), (925, 23374), (962, 22475), (1073, 20150), (1147, 18850), (1450, 14911), (1550, 13949), (1798, 12025), (1850, 11687), (1885, 11470), (2015, 10730), (2146, 10075), (2294, 9425), (2405, 8990), (3770, 5735), (4030, 5365), (4495, 4810)]