20978724

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1511}}^1$

素因数の和:1620

約数の個数: 48

約数和(自身を含む): 53343360

約数和(自身を除く): 32364636

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 89, 156, 178, 267, 356, 534, 1068, 1157, 1511, 2314, 3022, 3471, 4533, 4628, 6044, 6942, 9066, 13884, 18132, 19643, 39286, 58929, 78572, 117858, 134479, 235716, 268958, 403437, 537916, 806874, 1613748, 1748227, 3496454, 5244681, 6992908, 10489362, 20978724]

約数ペア:

[(1, 20978724), (2, 10489362), (3, 6992908), (4, 5244681), (6, 3496454), (12, 1748227), (13, 1613748), (26, 806874), (39, 537916), (52, 403437), (78, 268958), (89, 235716), (156, 134479), (178, 117858), (267, 78572), (356, 58929), (534, 39286), (1068, 19643), (1157, 18132), (1511, 13884), (2314, 9066), (3022, 6942), (3471, 6044), (4533, 4628)]