211318120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{406381}}^1$

素因数の和:406405

約数の個数: 32

約数和(自身を含む): 512041320

約数和(自身を除く): 300723200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 406381, 812762, 1625524, 2031905, 3251048, 4063810, 5282953, 8127620, 10565906, 16255240, 21131812, 26414765, 42263624, 52829530, 105659060, 211318120]

約数ペア:

[(1, 211318120), (2, 105659060), (4, 52829530), (5, 42263624), (8, 26414765), (10, 21131812), (13, 16255240), (20, 10565906), (26, 8127620), (40, 5282953), (52, 4063810), (65, 3251048), (104, 2031905), (130, 1625524), (260, 812762), (520, 406381)]