21519670

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{719}}^1$

素因数の和:840

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 18760010

約数列:

[1, 2, 5, 10, 41, 73, 82, 146, 205, 365, 410, 719, 730, 1438, 2993, 3595, 5986, 7190, 14965, 29479, 29930, 52487, 58958, 104974, 147395, 262435, 294790, 524870, 2151967, 4303934, 10759835, 21519670]

約数ペア:

[(1, 21519670), (2, 10759835), (5, 4303934), (10, 2151967), (41, 524870), (73, 294790), (82, 262435), (146, 147395), (205, 104974), (365, 58958), (410, 52487), (719, 29930), (730, 29479), (1438, 14965), (2993, 7190), (3595, 5986)]