86431640

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{13763}}^1$

素因数の和:13931

約数の個数: 32

約数和(自身を含む): 195724080

約数和(自身を除く): 109292440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 13763, 27526, 55052, 68815, 110104, 137630, 275260, 550520, 2160791, 4321582, 8643164, 10803955, 17286328, 21607910, 43215820, 86431640]

約数ペア:

[(1, 86431640), (2, 43215820), (4, 21607910), (5, 17286328), (8, 10803955), (10, 8643164), (20, 4321582), (40, 2160791), (157, 550520), (314, 275260), (628, 137630), (785, 110104), (1256, 68815), (1570, 55052), (3140, 27526), (6280, 13763)]