21246780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11423}}^1$

素因数の和:11466

約数の個数: 48

約数和(自身を含む): 61415424

約数和(自身を除く): 40168644

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, 11423, 22846, 34269, 45692, 57115, 68538, 114230, 137076, 171345, 228460, 342690, 354113, 685380, 708226, 1062339, 1416452, 1770565, 2124678, 3541130, 4249356, 5311695, 7082260, 10623390, 21246780]

約数ペア:

[(1, 21246780), (2, 10623390), (3, 7082260), (4, 5311695), (5, 4249356), (6, 3541130), (10, 2124678), (12, 1770565), (15, 1416452), (20, 1062339), (30, 708226), (31, 685380), (60, 354113), (62, 342690), (93, 228460), (124, 171345), (155, 137076), (186, 114230), (310, 68538), (372, 57115), (465, 45692), (620, 34269), (930, 22846), (1860, 11423)]