21771075

素因数分解:

$3^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{5477}}^1$

素因数の和:5543

約数の個数: 24

約数和(自身を含む): 36680688

約数和(自身を除く): 14909613

約数列:

[1, 3, 5, 15, 25, 53, 75, 159, 265, 795, 1325, 3975, 5477, 16431, 27385, 82155, 136925, 290281, 410775, 870843, 1451405, 4354215, 7257025, 21771075]

約数ペア:

[(1, 21771075), (3, 7257025), (5, 4354215), (15, 1451405), (25, 870843), (53, 410775), (75, 290281), (159, 136925), (265, 82155), (795, 27385), (1325, 16431), (3975, 5477)]