81143060

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{57143}}^1$

素因数の和:57223

約数の個数: 24

約数和(自身を含む): 172803456

約数和(自身を除く): 91660396

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 57143, 114286, 228572, 285715, 571430, 1142860, 4057153, 8114306, 16228612, 20285765, 40571530, 81143060]

約数ペア:

[(1, 81143060), (2, 40571530), (4, 20285765), (5, 16228612), (10, 8114306), (20, 4057153), (71, 1142860), (142, 571430), (284, 285715), (355, 228572), (710, 114286), (1420, 57143)]