20870390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{419}}^1$

素因数の和:736

約数の個数: 32

約数和(自身を含む): 40007520

約数和(自身を除く): 19137130

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 293, 419, 586, 838, 1465, 2095, 2930, 4190, 4981, 7123, 9962, 14246, 24905, 35615, 49810, 71230, 122767, 245534, 613835, 1227670, 2087039, 4174078, 10435195, 20870390]

約数ペア:

[(1, 20870390), (2, 10435195), (5, 4174078), (10, 2087039), (17, 1227670), (34, 613835), (85, 245534), (170, 122767), (293, 71230), (419, 49810), (586, 35615), (838, 24905), (1465, 14246), (2095, 9962), (2930, 7123), (4190, 4981)]