20431088

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{269}}^1$

素因数の和:425

約数の個数: 40

約数和(自身を含む): 40979520

約数和(自身を除く): 20548432

約数列:

[1, 2, 4, 8, 16, 47, 94, 101, 188, 202, 269, 376, 404, 538, 752, 808, 1076, 1616, 2152, 4304, 4747, 9494, 12643, 18988, 25286, 27169, 37976, 50572, 54338, 75952, 101144, 108676, 202288, 217352, 434704, 1276943, 2553886, 5107772, 10215544, 20431088]

約数ペア:

[(1, 20431088), (2, 10215544), (4, 5107772), (8, 2553886), (16, 1276943), (47, 434704), (94, 217352), (101, 202288), (188, 108676), (202, 101144), (269, 75952), (376, 54338), (404, 50572), (538, 37976), (752, 27169), (808, 25286), (1076, 18988), (1616, 12643), (2152, 9494), (4304, 4747)]