19977232

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{509}}^1$

素因数の和:751

約数の個数: 40

約数和(自身を含む): 42497280

約数和(自身を除く): 22520048

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 223, 446, 509, 892, 1018, 1784, 2036, 2453, 3568, 4072, 4906, 5599, 8144, 9812, 11198, 19624, 22396, 39248, 44792, 89584, 113507, 227014, 454028, 908056, 1248577, 1816112, 2497154, 4994308, 9988616, 19977232]

約数ペア:

[(1, 19977232), (2, 9988616), (4, 4994308), (8, 2497154), (11, 1816112), (16, 1248577), (22, 908056), (44, 454028), (88, 227014), (176, 113507), (223, 89584), (446, 44792), (509, 39248), (892, 22396), (1018, 19624), (1784, 11198), (2036, 9812), (2453, 8144), (3568, 5599), (4072, 4906)]