79998520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{285709}}^1$

素因数の和:285727

約数の個数: 32

約数和(自身を含む): 205711200

約数和(自身を除く): 125712680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 285709, 571418, 1142836, 1428545, 1999963, 2285672, 2857090, 3999926, 5714180, 7999852, 9999815, 11428360, 15999704, 19999630, 39999260, 79998520]

約数ペア:

[(1, 79998520), (2, 39999260), (4, 19999630), (5, 15999704), (7, 11428360), (8, 9999815), (10, 7999852), (14, 5714180), (20, 3999926), (28, 2857090), (35, 2285672), (40, 1999963), (56, 1428545), (70, 1142836), (140, 571418), (280, 285709)]