21238780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{62467}}^1$

素因数の和:62493

約数の個数: 24

約数和(自身を含む): 47225808

約数和(自身を除く): 25987028

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 62467, 124934, 249868, 312335, 624670, 1061939, 1249340, 2123878, 4247756, 5309695, 10619390, 21238780]

約数ペア:

[(1, 21238780), (2, 10619390), (4, 5309695), (5, 4247756), (10, 2123878), (17, 1249340), (20, 1061939), (34, 624670), (68, 312335), (85, 249868), (170, 124934), (340, 62467)]