66438160

素因数分解:

$2^4\times 5^1\times {\mathrm{830477}}^1$

素因数の和:830490

約数の個数: 20

約数和(自身を含む): 154468908

約数和(自身を除く): 88030748

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 830477, 1660954, 3321908, 4152385, 6643816, 8304770, 13287632, 16609540, 33219080, 66438160]

約数ペア:

[(1, 66438160), (2, 33219080), (4, 16609540), (5, 13287632), (8, 8304770), (10, 6643816), (16, 4152385), (20, 3321908), (40, 1660954), (80, 830477)]