21711384

素因数分解:

$2^3\times 3^2\times {\mathrm{151}}^1\times {\mathrm{1997}}^1$

素因数の和:2160

約数の個数: 48

約数和(自身を含む): 59220720

約数和(自身を除く): 37509336

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 151, 302, 453, 604, 906, 1208, 1359, 1812, 1997, 2718, 3624, 3994, 5436, 5991, 7988, 10872, 11982, 15976, 17973, 23964, 35946, 47928, 71892, 143784, 301547, 603094, 904641, 1206188, 1809282, 2412376, 2713923, 3618564, 5427846, 7237128, 10855692, 21711384]

約数ペア:

[(1, 21711384), (2, 10855692), (3, 7237128), (4, 5427846), (6, 3618564), (8, 2713923), (9, 2412376), (12, 1809282), (18, 1206188), (24, 904641), (36, 603094), (72, 301547), (151, 143784), (302, 71892), (453, 47928), (604, 35946), (906, 23964), (1208, 17973), (1359, 15976), (1812, 11982), (1997, 10872), (2718, 7988), (3624, 5991), (3994, 5436)]