20176570840

素因数分解:

$2^3\times 5^1\times {\mathrm{787}}^1\times {\mathrm{640933}}^1$

素因数の和:641731

約数の個数: 32

約数和(自身を含む): 45455039280

約数和(自身を除く): 25278468440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 787, 1574, 3148, 3935, 6296, 7870, 15740, 31480, 640933, 1281866, 2563732, 3204665, 5127464, 6409330, 12818660, 25637320, 504414271, 1008828542, 2017657084, 2522071355, 4035314168, 5044142710, 10088285420, 20176570840]

約数ペア:

[(1, 20176570840), (2, 10088285420), (4, 5044142710), (5, 4035314168), (8, 2522071355), (10, 2017657084), (20, 1008828542), (40, 504414271), (787, 25637320), (1574, 12818660), (3148, 6409330), (3935, 5127464), (6296, 3204665), (7870, 2563732), (15740, 1281866), (31480, 640933)]