21939075

素因数分解:

$3^2\times 5^2\times {\mathrm{281}}^1\times {\mathrm{347}}^1$

素因数の和:644

約数の個数: 36

約数和(自身を含む): 39548808

約数和(自身を除く): 17609733

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 281, 347, 843, 1041, 1405, 1735, 2529, 3123, 4215, 5205, 7025, 8675, 12645, 15615, 21075, 26025, 63225, 78075, 97507, 292521, 487535, 877563, 1462605, 2437675, 4387815, 7313025, 21939075]

約数ペア:

[(1, 21939075), (3, 7313025), (5, 4387815), (9, 2437675), (15, 1462605), (25, 877563), (45, 487535), (75, 292521), (225, 97507), (281, 78075), (347, 63225), (843, 26025), (1041, 21075), (1405, 15615), (1735, 12645), (2529, 8675), (3123, 7025), (4215, 5205)]