21817040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38959}}^1$

素因数の和:38979

約数の個数: 40

約数和(自身を含む): 57972480

約数和(自身を除く): 36155440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38959, 77918, 155836, 194795, 272713, 311672, 389590, 545426, 623344, 779180, 1090852, 1363565, 1558360, 2181704, 2727130, 3116720, 4363408, 5454260, 10908520, 21817040]

約数ペア:

[(1, 21817040), (2, 10908520), (4, 5454260), (5, 4363408), (7, 3116720), (8, 2727130), (10, 2181704), (14, 1558360), (16, 1363565), (20, 1090852), (28, 779180), (35, 623344), (40, 545426), (56, 389590), (70, 311672), (80, 272713), (112, 194795), (140, 155836), (280, 77918), (560, 38959)]