20641390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2437}}^1$

素因数の和:2473

約数の個数: 48

約数和(自身を含む): 46692576

約数和(自身を除く): 26051186

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 121, 154, 242, 385, 605, 770, 847, 1210, 1694, 2437, 4235, 4874, 8470, 12185, 17059, 24370, 26807, 34118, 53614, 85295, 134035, 170590, 187649, 268070, 294877, 375298, 589754, 938245, 1474385, 1876490, 2064139, 2948770, 4128278, 10320695, 20641390]

約数ペア:

[(1, 20641390), (2, 10320695), (5, 4128278), (7, 2948770), (10, 2064139), (11, 1876490), (14, 1474385), (22, 938245), (35, 589754), (55, 375298), (70, 294877), (77, 268070), (110, 187649), (121, 170590), (154, 134035), (242, 85295), (385, 53614), (605, 34118), (770, 26807), (847, 24370), (1210, 17059), (1694, 12185), (2437, 8470), (4235, 4874)]