16913620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 36989568

約数和(自身を除く): 20075948

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 142, 172, 215, 277, 284, 355, 430, 554, 710, 860, 1108, 1385, 1420, 2770, 3053, 5540, 6106, 11911, 12212, 15265, 19667, 23822, 30530, 39334, 47644, 59555, 61060, 78668, 98335, 119110, 196670, 238220, 393340, 845681, 1691362, 3382724, 4228405, 8456810, 16913620]

約数ペア:

[(1, 16913620), (2, 8456810), (4, 4228405), (5, 3382724), (10, 1691362), (20, 845681), (43, 393340), (71, 238220), (86, 196670), (142, 119110), (172, 98335), (215, 78668), (277, 61060), (284, 59555), (355, 47644), (430, 39334), (554, 30530), (710, 23822), (860, 19667), (1108, 15265), (1385, 12212), (1420, 11911), (2770, 6106), (3053, 5540)]