13821781180

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{809}}^1\times {\mathrm{6521}}^1$

素因数の和:7470

約数の個数: 48

約数和(自身を含む): 29287954080

約数和(自身を除く): 15466172900

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 809, 1310, 1618, 2620, 3236, 4045, 6521, 8090, 13042, 16180, 26084, 32605, 65210, 105979, 130420, 211958, 423916, 529895, 854251, 1059790, 1708502, 2119580, 3417004, 4271255, 5275489, 8542510, 10550978, 17085020, 21101956, 26377445, 52754890, 105509780, 691089059, 1382178118, 2764356236, 3455445295, 6910890590, 13821781180]

約数ペア:

[(1, 13821781180), (2, 6910890590), (4, 3455445295), (5, 2764356236), (10, 1382178118), (20, 691089059), (131, 105509780), (262, 52754890), (524, 26377445), (655, 21101956), (809, 17085020), (1310, 10550978), (1618, 8542510), (2620, 5275489), (3236, 4271255), (4045, 3417004), (6521, 2119580), (8090, 1708502), (13042, 1059790), (16180, 854251), (26084, 529895), (32605, 423916), (65210, 211958), (105979, 130420)]