20417247

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{571}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 30785040

約数和(自身を除く): 10367793

約数列:

[1, 3, 9, 29, 87, 137, 261, 411, 571, 1233, 1713, 3973, 5139, 11919, 16559, 35757, 49677, 78227, 149031, 234681, 704043, 2268583, 6805749, 20417247]

約数ペア:

[(1, 20417247), (3, 6805749), (9, 2268583), (29, 704043), (87, 234681), (137, 149031), (261, 78227), (411, 49677), (571, 35757), (1233, 16559), (1713, 11919), (3973, 5139)]