20781780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11173}}^1$

素因数の和:11216

約数の個数: 48

約数和(自身を含む): 60071424

約数和(自身を除く): 39289644

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 372, 465, 620, 930, 1860, 11173, 22346, 33519, 44692, 55865, 67038, 111730, 134076, 167595, 223460, 335190, 346363, 670380, 692726, 1039089, 1385452, 1731815, 2078178, 3463630, 4156356, 5195445, 6927260, 10390890, 20781780]

約数ペア:

[(1, 20781780), (2, 10390890), (3, 6927260), (4, 5195445), (5, 4156356), (6, 3463630), (10, 2078178), (12, 1731815), (15, 1385452), (20, 1039089), (30, 692726), (31, 670380), (60, 346363), (62, 335190), (93, 223460), (124, 167595), (155, 134076), (186, 111730), (310, 67038), (372, 55865), (465, 44692), (620, 33519), (930, 22346), (1860, 11173)]