2178156970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19801427}}^1$

素因数の和:19801445

約数の個数: 16

約数和(自身を含む): 4277108448

約数和(自身を除く): 2098951478

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 19801427, 39602854, 99007135, 198014270, 217815697, 435631394, 1089078485, 2178156970]

約数ペア:

[(1, 2178156970), (2, 1089078485), (5, 435631394), (10, 217815697), (11, 198014270), (22, 99007135), (55, 39602854), (110, 19801427)]