90131720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{863}}^1$

素因数の和:1254

約数の個数: 64

約数和(自身を含む): 232657920

約数和(自身を除く): 142526200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 373, 746, 863, 1492, 1726, 1865, 2611, 2984, 3452, 3730, 4315, 5222, 6041, 6904, 7460, 8630, 10444, 12082, 13055, 14920, 17260, 20888, 24164, 26110, 30205, 34520, 48328, 52220, 60410, 104440, 120820, 241640, 321899, 643798, 1287596, 1609495, 2253293, 2575192, 3218990, 4506586, 6437980, 9013172, 11266465, 12875960, 18026344, 22532930, 45065860, 90131720]

約数ペア:

[(1, 90131720), (2, 45065860), (4, 22532930), (5, 18026344), (7, 12875960), (8, 11266465), (10, 9013172), (14, 6437980), (20, 4506586), (28, 3218990), (35, 2575192), (40, 2253293), (56, 1609495), (70, 1287596), (140, 643798), (280, 321899), (373, 241640), (746, 120820), (863, 104440), (1492, 60410), (1726, 52220), (1865, 48328), (2611, 34520), (2984, 30205), (3452, 26110), (3730, 24164), (4315, 20888), (5222, 17260), (6041, 14920), (6904, 13055), (7460, 12082), (8630, 10444)]