215996859

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{20743}}^1$

素因数の和:20851

約数の個数: 24

約数和(自身を含む): 339786720

約数和(自身を除く): 123789861

約数列:

[1, 3, 9, 13, 39, 89, 117, 267, 801, 1157, 3471, 10413, 20743, 62229, 186687, 269659, 808977, 1846127, 2426931, 5538381, 16615143, 23999651, 71998953, 215996859]

約数ペア:

[(1, 215996859), (3, 71998953), (9, 23999651), (13, 16615143), (39, 5538381), (89, 2426931), (117, 1846127), (267, 808977), (801, 269659), (1157, 186687), (3471, 62229), (10413, 20743)]