21195180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117751}}^1$

素因数の和:117766

約数の個数: 36

約数和(自身を含む): 64292592

約数和(自身を除く): 43097412

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117751, 235502, 353253, 471004, 588755, 706506, 1059759, 1177510, 1413012, 1766265, 2119518, 2355020, 3532530, 4239036, 5298795, 7065060, 10597590, 21195180]

約数ペア:

[(1, 21195180), (2, 10597590), (3, 7065060), (4, 5298795), (5, 4239036), (6, 3532530), (9, 2355020), (10, 2119518), (12, 1766265), (15, 1413012), (18, 1177510), (20, 1059759), (30, 706506), (36, 588755), (45, 471004), (60, 353253), (90, 235502), (180, 117751)]