21680170

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{397}}^1$

素因数の和:574

約数の個数: 32

約数和(自身を含む): 40347648

約数和(自身を除く): 18667478

約数列:

[1, 2, 5, 10, 43, 86, 127, 215, 254, 397, 430, 635, 794, 1270, 1985, 3970, 5461, 10922, 17071, 27305, 34142, 50419, 54610, 85355, 100838, 170710, 252095, 504190, 2168017, 4336034, 10840085, 21680170]

約数ペア:

[(1, 21680170), (2, 10840085), (5, 4336034), (10, 2168017), (43, 504190), (86, 252095), (127, 170710), (215, 100838), (254, 85355), (397, 54610), (430, 50419), (635, 34142), (794, 27305), (1270, 17071), (1985, 10922), (3970, 5461)]