18872420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5861}}^1$

素因数の和:5900

約数の個数: 48

約数和(自身を含む): 47271168

約数和(自身を除く): 28398748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 5861, 11722, 23444, 29305, 41027, 58610, 82054, 117220, 134803, 164108, 205135, 269606, 410270, 539212, 674015, 820540, 943621, 1348030, 1887242, 2696060, 3774484, 4718105, 9436210, 18872420]

約数ペア:

[(1, 18872420), (2, 9436210), (4, 4718105), (5, 3774484), (7, 2696060), (10, 1887242), (14, 1348030), (20, 943621), (23, 820540), (28, 674015), (35, 539212), (46, 410270), (70, 269606), (92, 205135), (115, 164108), (140, 134803), (161, 117220), (230, 82054), (322, 58610), (460, 41027), (644, 29305), (805, 23444), (1610, 11722), (3220, 5861)]