18941715

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:321

約数の個数: 64

約数和(自身を含む): 37255680

約数和(自身を除く): 18313965

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 43, 45, 65, 117, 129, 135, 195, 215, 251, 351, 387, 559, 585, 645, 753, 1161, 1255, 1677, 1755, 1935, 2259, 2795, 3263, 3765, 5031, 5805, 6777, 8385, 9789, 10793, 11295, 15093, 16315, 25155, 29367, 32379, 33885, 48945, 53965, 75465, 88101, 97137, 140309, 146835, 161895, 291411, 420927, 440505, 485685, 701545, 1262781, 1457055, 2104635, 3788343, 6313905, 18941715]

約数ペア:

[(1, 18941715), (3, 6313905), (5, 3788343), (9, 2104635), (13, 1457055), (15, 1262781), (27, 701545), (39, 485685), (43, 440505), (45, 420927), (65, 291411), (117, 161895), (129, 146835), (135, 140309), (195, 97137), (215, 88101), (251, 75465), (351, 53965), (387, 48945), (559, 33885), (585, 32379), (645, 29367), (753, 25155), (1161, 16315), (1255, 15093), (1677, 11295), (1755, 10793), (1935, 9789), (2259, 8385), (2795, 6777), (3263, 5805), (3765, 5031)]