18203170

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:390

約数の個数: 32

約数和(自身を含む): 33611760

約数和(自身を除く): 15408590

約数列:

[1, 2, 5, 10, 89, 113, 178, 181, 226, 362, 445, 565, 890, 905, 1130, 1810, 10057, 16109, 20114, 20453, 32218, 40906, 50285, 80545, 100570, 102265, 161090, 204530, 1820317, 3640634, 9101585, 18203170]

約数ペア:

[(1, 18203170), (2, 9101585), (5, 3640634), (10, 1820317), (89, 204530), (113, 161090), (178, 102265), (181, 100570), (226, 80545), (362, 50285), (445, 40906), (565, 32218), (890, 20453), (905, 20114), (1130, 16109), (1810, 10057)]