21384025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3463}}^1$

素因数の和:3505

約数の個数: 24

約数和(自身を含む): 30067520

約数和(自身を除く): 8683495

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 475, 1235, 3463, 6175, 17315, 45019, 65797, 86575, 225095, 328985, 855361, 1125475, 1644925, 4276805, 21384025]

約数ペア:

[(1, 21384025), (5, 4276805), (13, 1644925), (19, 1125475), (25, 855361), (65, 328985), (95, 225095), (247, 86575), (325, 65797), (475, 45019), (1235, 17315), (3463, 6175)]