20398156

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{2039}}^1$

素因数の和:2145

約数の個数: 24

約数和(自身を含む): 37185120

約数和(自身を除く): 16786964

約数列:

[1, 2, 4, 41, 61, 82, 122, 164, 244, 2039, 2501, 4078, 5002, 8156, 10004, 83599, 124379, 167198, 248758, 334396, 497516, 5099539, 10199078, 20398156]

約数ペア:

[(1, 20398156), (2, 10199078), (4, 5099539), (41, 497516), (61, 334396), (82, 248758), (122, 167198), (164, 124379), (244, 83599), (2039, 10004), (2501, 8156), (4078, 5002)]