21390564

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{137119}}^1$

素因数の和:137139

約数の個数: 24

約数和(自身を含む): 53751040

約数和(自身を除く): 32360476

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 137119, 274238, 411357, 548476, 822714, 1645428, 1782547, 3565094, 5347641, 7130188, 10695282, 21390564]

約数ペア:

[(1, 21390564), (2, 10695282), (3, 7130188), (4, 5347641), (6, 3565094), (12, 1782547), (13, 1645428), (26, 822714), (39, 548476), (52, 411357), (78, 274238), (156, 137119)]