216978380

素因数分解:

$2^2\times 5^1\times {\mathrm{1619}}^1\times {\mathrm{6701}}^1$

素因数の和:8329

約数の個数: 24

約数和(自身を含む): 456004080

約数和(自身を除く): 239025700

約数列:

[1, 2, 4, 5, 10, 20, 1619, 3238, 6476, 6701, 8095, 13402, 16190, 26804, 32380, 33505, 67010, 134020, 10848919, 21697838, 43395676, 54244595, 108489190, 216978380]

約数ペア:

[(1, 216978380), (2, 108489190), (4, 54244595), (5, 43395676), (10, 21697838), (20, 10848919), (1619, 134020), (3238, 67010), (6476, 33505), (6701, 32380), (8095, 26804), (13402, 16190)]