21195660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{457}}^1\times {\mathrm{773}}^1$

素因数の和:1242

約数の個数: 48

約数和(自身を含む): 59554656

約数和(自身を除く): 38358996

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 457, 773, 914, 1371, 1546, 1828, 2285, 2319, 2742, 3092, 3865, 4570, 4638, 5484, 6855, 7730, 9140, 9276, 11595, 13710, 15460, 23190, 27420, 46380, 353261, 706522, 1059783, 1413044, 1766305, 2119566, 3532610, 4239132, 5298915, 7065220, 10597830, 21195660]

約数ペア:

[(1, 21195660), (2, 10597830), (3, 7065220), (4, 5298915), (5, 4239132), (6, 3532610), (10, 2119566), (12, 1766305), (15, 1413044), (20, 1059783), (30, 706522), (60, 353261), (457, 46380), (773, 27420), (914, 23190), (1371, 15460), (1546, 13710), (1828, 11595), (2285, 9276), (2319, 9140), (2742, 7730), (3092, 6855), (3865, 5484), (4570, 4638)]