20563640

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7673}}^1$

素因数の和:7751

約数の個数: 32

約数和(自身を含む): 46964880

約数和(自身を除く): 26401240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7673, 15346, 30692, 38365, 61384, 76730, 153460, 306920, 514091, 1028182, 2056364, 2570455, 4112728, 5140910, 10281820, 20563640]

約数ペア:

[(1, 20563640), (2, 10281820), (4, 5140910), (5, 4112728), (8, 2570455), (10, 2056364), (20, 1028182), (40, 514091), (67, 306920), (134, 153460), (268, 76730), (335, 61384), (536, 38365), (670, 30692), (1340, 15346), (2680, 7673)]