21634940

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{13693}}^1$

素因数の和:13781

約数の個数: 24

約数和(自身を含む): 46011840

約数和(自身を除く): 24376900

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 13693, 27386, 54772, 68465, 136930, 273860, 1081747, 2163494, 4326988, 5408735, 10817470, 21634940]

約数ペア:

[(1, 21634940), (2, 10817470), (4, 5408735), (5, 4326988), (10, 2163494), (20, 1081747), (79, 273860), (158, 136930), (316, 68465), (395, 54772), (790, 27386), (1580, 13693)]