20510308

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{67}}^1$

素因数の和:149

約数の個数: 72

約数和(自身を含む): 46434752

約数和(自身を除く): 25924444

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 29, 52, 58, 67, 91, 116, 134, 182, 203, 268, 364, 377, 406, 469, 754, 812, 841, 871, 938, 1508, 1682, 1742, 1876, 1943, 2639, 3364, 3484, 3886, 5278, 5887, 6097, 7772, 10556, 10933, 11774, 12194, 13601, 21866, 23548, 24388, 25259, 27202, 43732, 50518, 54404, 56347, 76531, 101036, 112694, 153062, 176813, 225388, 306124, 353626, 394429, 707252, 732511, 788858, 1465022, 1577716, 2930044, 5127577, 10255154, 20510308]

約数ペア:

[(1, 20510308), (2, 10255154), (4, 5127577), (7, 2930044), (13, 1577716), (14, 1465022), (26, 788858), (28, 732511), (29, 707252), (52, 394429), (58, 353626), (67, 306124), (91, 225388), (116, 176813), (134, 153062), (182, 112694), (203, 101036), (268, 76531), (364, 56347), (377, 54404), (406, 50518), (469, 43732), (754, 27202), (812, 25259), (841, 24388), (871, 23548), (938, 21866), (1508, 13601), (1682, 12194), (1742, 11774), (1876, 10933), (1943, 10556), (2639, 7772), (3364, 6097), (3484, 5887), (3886, 5278)]