84157900

素因数分解:

$2^2\times 5^2\times {\mathrm{421}}^1\times {\mathrm{1999}}^1$

素因数の和:2434

約数の個数: 36

約数和(自身を含む): 183148000

約数和(自身を除く): 98990100

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 421, 842, 1684, 1999, 2105, 3998, 4210, 7996, 8420, 9995, 10525, 19990, 21050, 39980, 42100, 49975, 99950, 199900, 841579, 1683158, 3366316, 4207895, 8415790, 16831580, 21039475, 42078950, 84157900]

約数ペア:

[(1, 84157900), (2, 42078950), (4, 21039475), (5, 16831580), (10, 8415790), (20, 4207895), (25, 3366316), (50, 1683158), (100, 841579), (421, 199900), (842, 99950), (1684, 49975), (1999, 42100), (2105, 39980), (3998, 21050), (4210, 19990), (7996, 10525), (8420, 9995)]