20813868

素因数分解:

$2^2\times 3^3\times {\mathrm{439}}^2$

素因数の和:891

約数の個数: 36

約数和(自身を含む): 54085080

約数和(自身を除く): 33271212

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 439, 878, 1317, 1756, 2634, 3951, 5268, 7902, 11853, 15804, 23706, 47412, 192721, 385442, 578163, 770884, 1156326, 1734489, 2312652, 3468978, 5203467, 6937956, 10406934, 20813868]

約数ペア:

[(1, 20813868), (2, 10406934), (3, 6937956), (4, 5203467), (6, 3468978), (9, 2312652), (12, 1734489), (18, 1156326), (27, 770884), (36, 578163), (54, 385442), (108, 192721), (439, 47412), (878, 23706), (1317, 15804), (1756, 11853), (2634, 7902), (3951, 5268)]