20344376

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{311}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 44815680

約数和(自身を除く): 24471304

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 37, 52, 68, 74, 104, 136, 148, 221, 296, 311, 442, 481, 622, 629, 884, 962, 1244, 1258, 1768, 1924, 2488, 2516, 3848, 4043, 5032, 5287, 8086, 8177, 10574, 11507, 16172, 16354, 21148, 23014, 32344, 32708, 42296, 46028, 65416, 68731, 92056, 137462, 149591, 195619, 274924, 299182, 391238, 549848, 598364, 782476, 1196728, 1564952, 2543047, 5086094, 10172188, 20344376]

約数ペア:

[(1, 20344376), (2, 10172188), (4, 5086094), (8, 2543047), (13, 1564952), (17, 1196728), (26, 782476), (34, 598364), (37, 549848), (52, 391238), (68, 299182), (74, 274924), (104, 195619), (136, 149591), (148, 137462), (221, 92056), (296, 68731), (311, 65416), (442, 46028), (481, 42296), (622, 32708), (629, 32344), (884, 23014), (962, 21148), (1244, 16354), (1258, 16172), (1768, 11507), (1924, 10574), (2488, 8177), (2516, 8086), (3848, 5287), (4043, 5032)]