20494520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30139}}^1$

素因数の和:30167

約数の個数: 32

約数和(自身を含む): 48826800

約数和(自身を除く): 28332280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30139, 60278, 120556, 150695, 241112, 301390, 512363, 602780, 1024726, 1205560, 2049452, 2561815, 4098904, 5123630, 10247260, 20494520]

約数ペア:

[(1, 20494520), (2, 10247260), (4, 5123630), (5, 4098904), (8, 2561815), (10, 2049452), (17, 1205560), (20, 1024726), (34, 602780), (40, 512363), (68, 301390), (85, 241112), (136, 150695), (170, 120556), (340, 60278), (680, 30139)]