21218618

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:278

約数の個数: 32

約数和(自身を含む): 34909056

約数和(自身を除く): 13690438

約数列:

[1, 2, 17, 34, 73, 83, 103, 146, 166, 206, 1241, 1411, 1751, 2482, 2822, 3502, 6059, 7519, 8549, 12118, 15038, 17098, 103003, 127823, 145333, 206006, 255646, 290666, 624077, 1248154, 10609309, 21218618]

約数ペア:

[(1, 21218618), (2, 10609309), (17, 1248154), (34, 624077), (73, 290666), (83, 255646), (103, 206006), (146, 145333), (166, 127823), (206, 103003), (1241, 17098), (1411, 15038), (1751, 12118), (2482, 8549), (2822, 7519), (3502, 6059)]