21137360

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^2\times {\mathrm{193}}^1$

素因数の和:280

約数の個数: 60

約数和(自身を含む): 50770188

約数和(自身を除く): 29632828

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 193, 296, 370, 386, 592, 740, 772, 965, 1369, 1480, 1544, 1930, 2738, 2960, 3088, 3860, 5476, 6845, 7141, 7720, 10952, 13690, 14282, 15440, 21904, 27380, 28564, 35705, 54760, 57128, 71410, 109520, 114256, 142820, 264217, 285640, 528434, 571280, 1056868, 1321085, 2113736, 2642170, 4227472, 5284340, 10568680, 21137360]

約数ペア:

[(1, 21137360), (2, 10568680), (4, 5284340), (5, 4227472), (8, 2642170), (10, 2113736), (16, 1321085), (20, 1056868), (37, 571280), (40, 528434), (74, 285640), (80, 264217), (148, 142820), (185, 114256), (193, 109520), (296, 71410), (370, 57128), (386, 54760), (592, 35705), (740, 28564), (772, 27380), (965, 21904), (1369, 15440), (1480, 14282), (1544, 13690), (1930, 10952), (2738, 7720), (2960, 7141), (3088, 6845), (3860, 5476)]