428240

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:167

約数の個数: 40

約数和(自身を含む): 1024488

約数和(自身を除く): 596248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 101, 106, 202, 212, 265, 404, 424, 505, 530, 808, 848, 1010, 1060, 1616, 2020, 2120, 4040, 4240, 5353, 8080, 10706, 21412, 26765, 42824, 53530, 85648, 107060, 214120, 428240]

約数ペア:

[(1, 428240), (2, 214120), (4, 107060), (5, 85648), (8, 53530), (10, 42824), (16, 26765), (20, 21412), (40, 10706), (53, 8080), (80, 5353), (101, 4240), (106, 4040), (202, 2120), (212, 2020), (265, 1616), (404, 1060), (424, 1010), (505, 848), (530, 808)]