20915856

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{11173}}^1$

素因数の和:11200

約数の個数: 60

約数和(自身を含む): 63043708

約数和(自身を除く): 42127852

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 208, 234, 312, 468, 624, 936, 1872, 11173, 22346, 33519, 44692, 67038, 89384, 100557, 134076, 145249, 178768, 201114, 268152, 290498, 402228, 435747, 536304, 580996, 804456, 871494, 1161992, 1307241, 1608912, 1742988, 2323984, 2614482, 3485976, 5228964, 6971952, 10457928, 20915856]

約数ペア:

[(1, 20915856), (2, 10457928), (3, 6971952), (4, 5228964), (6, 3485976), (8, 2614482), (9, 2323984), (12, 1742988), (13, 1608912), (16, 1307241), (18, 1161992), (24, 871494), (26, 804456), (36, 580996), (39, 536304), (48, 435747), (52, 402228), (72, 290498), (78, 268152), (104, 201114), (117, 178768), (144, 145249), (156, 134076), (208, 100557), (234, 89384), (312, 67038), (468, 44692), (624, 33519), (936, 22346), (1872, 11173)]