20717486

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:504

約数の個数: 32

約数和(自身を含む): 34636800

約数和(自身を除く): 13919314

約数列:

[1, 2, 19, 31, 38, 43, 62, 86, 409, 589, 817, 818, 1178, 1333, 1634, 2666, 7771, 12679, 15542, 17587, 25327, 25358, 35174, 50654, 240901, 334153, 481802, 545197, 668306, 1090394, 10358743, 20717486]

約数ペア:

[(1, 20717486), (2, 10358743), (19, 1090394), (31, 668306), (38, 545197), (43, 481802), (62, 334153), (86, 240901), (409, 50654), (589, 35174), (817, 25358), (818, 25327), (1178, 17587), (1333, 15542), (1634, 12679), (2666, 7771)]