20621013

素因数分解:

$3^1\times 7^2\times {\mathrm{151}}^1\times {\mathrm{929}}^1$

素因数の和:1097

約数の個数: 24

約数和(自身を含む): 32230080

約数和(自身を除く): 11609067

約数列:

[1, 3, 7, 21, 49, 147, 151, 453, 929, 1057, 2787, 3171, 6503, 7399, 19509, 22197, 45521, 136563, 140279, 420837, 981953, 2945859, 6873671, 20621013]

約数ペア:

[(1, 20621013), (3, 6873671), (7, 2945859), (21, 981953), (49, 420837), (147, 140279), (151, 136563), (453, 45521), (929, 22197), (1057, 19509), (2787, 7399), (3171, 6503)]