21130575

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16573}}^1$

素因数の和:16603

約数の個数: 24

約数和(自身を含む): 36993168

約数和(自身を除く): 15862593

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16573, 49719, 82865, 248595, 281741, 414325, 845223, 1242975, 1408705, 4226115, 7043525, 21130575]

約数ペア:

[(1, 21130575), (3, 7043525), (5, 4226115), (15, 1408705), (17, 1242975), (25, 845223), (51, 414325), (75, 281741), (85, 248595), (255, 82865), (425, 49719), (1275, 16573)]