21316725

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5573}}^1$

素因数の和:5606

約数の個数: 36

約数和(自身を含む): 40433796

約数和(自身を除く): 19117071

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 5573, 16719, 27865, 50157, 83595, 94741, 139325, 250785, 284223, 417975, 473705, 852669, 1253925, 1421115, 2368525, 4263345, 7105575, 21316725]

約数ペア:

[(1, 21316725), (3, 7105575), (5, 4263345), (9, 2368525), (15, 1421115), (17, 1253925), (25, 852669), (45, 473705), (51, 417975), (75, 284223), (85, 250785), (153, 139325), (225, 94741), (255, 83595), (425, 50157), (765, 27865), (1275, 16719), (3825, 5573)]