21704085

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 42336000

約数和(自身を除く): 20631915

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 83, 117, 135, 149, 195, 249, 351, 415, 447, 585, 745, 747, 1079, 1245, 1341, 1755, 1937, 2235, 2241, 3237, 3735, 4023, 5395, 5811, 6705, 9685, 9711, 11205, 12367, 16185, 17433, 20115, 29055, 29133, 37101, 48555, 52299, 61835, 87165, 111303, 145665, 160771, 185505, 261495, 333909, 482313, 556515, 803855, 1446939, 1669545, 2411565, 4340817, 7234695, 21704085]

約数ペア:

[(1, 21704085), (3, 7234695), (5, 4340817), (9, 2411565), (13, 1669545), (15, 1446939), (27, 803855), (39, 556515), (45, 482313), (65, 333909), (83, 261495), (117, 185505), (135, 160771), (149, 145665), (195, 111303), (249, 87165), (351, 61835), (415, 52299), (447, 48555), (585, 37101), (745, 29133), (747, 29055), (1079, 20115), (1245, 17433), (1341, 16185), (1755, 12367), (1937, 11205), (2235, 9711), (2241, 9685), (3237, 6705), (3735, 5811), (4023, 5395)]