158720920

素因数分解:

$2^3\times 5^1\times {\mathrm{3968023}}^1$

素因数の和:3968034

約数の個数: 16

約数和(自身を含む): 357122160

約数和(自身を除く): 198401240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3968023, 7936046, 15872092, 19840115, 31744184, 39680230, 79360460, 158720920]

約数ペア:

[(1, 158720920), (2, 79360460), (4, 39680230), (5, 31744184), (8, 19840115), (10, 15872092), (20, 7936046), (40, 3968023)]