199901920

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{17597}}^1$

素因数の和:17683

約数の個数: 48

約数和(自身を含む): 478947168

約数和(自身を除く): 279045248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 2272, 2840, 5680, 11360, 17597, 35194, 70388, 87985, 140776, 175970, 281552, 351940, 563104, 703880, 1249387, 1407760, 2498774, 2815520, 4997548, 6246935, 9995096, 12493870, 19990192, 24987740, 39980384, 49975480, 99950960, 199901920]

約数ペア:

[(1, 199901920), (2, 99950960), (4, 49975480), (5, 39980384), (8, 24987740), (10, 19990192), (16, 12493870), (20, 9995096), (32, 6246935), (40, 4997548), (71, 2815520), (80, 2498774), (142, 1407760), (160, 1249387), (284, 703880), (355, 563104), (568, 351940), (710, 281552), (1136, 175970), (1420, 140776), (2272, 87985), (2840, 70388), (5680, 35194), (11360, 17597)]