20029990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2243}}^1$

素因数の和:2316

約数の個数: 32

約数和(自身を含む): 38776320

約数和(自身を除く): 18746330

約数列:

[1, 2, 5, 10, 19, 38, 47, 94, 95, 190, 235, 470, 893, 1786, 2243, 4465, 4486, 8930, 11215, 22430, 42617, 85234, 105421, 210842, 213085, 426170, 527105, 1054210, 2002999, 4005998, 10014995, 20029990]

約数ペア:

[(1, 20029990), (2, 10014995), (5, 4005998), (10, 2002999), (19, 1054210), (38, 527105), (47, 426170), (94, 213085), (95, 210842), (190, 105421), (235, 85234), (470, 42617), (893, 22430), (1786, 11215), (2243, 8930), (4465, 4486)]