81143360

素因数分解:

$2^6\times 5^1\times {\mathrm{253573}}^1$

素因数の和:253590

約数の個数: 28

約数和(自身を含む): 193223388

約数和(自身を除く): 112080028

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 253573, 507146, 1014292, 1267865, 2028584, 2535730, 4057168, 5071460, 8114336, 10142920, 16228672, 20285840, 40571680, 81143360]

約数ペア:

[(1, 81143360), (2, 40571680), (4, 20285840), (5, 16228672), (8, 10142920), (10, 8114336), (16, 5071460), (20, 4057168), (32, 2535730), (40, 2028584), (64, 1267865), (80, 1014292), (160, 507146), (320, 253573)]