131489960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{1259}}^1$

素因数の和:1650

約数の個数: 64

約数和(自身を含む): 339292800

約数和(自身を除く): 207802840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 373, 746, 1259, 1492, 1865, 2518, 2611, 2984, 3730, 5036, 5222, 6295, 7460, 8813, 10072, 10444, 12590, 13055, 14920, 17626, 20888, 25180, 26110, 35252, 44065, 50360, 52220, 70504, 88130, 104440, 176260, 352520, 469607, 939214, 1878428, 2348035, 3287249, 3756856, 4696070, 6574498, 9392140, 13148996, 16436245, 18784280, 26297992, 32872490, 65744980, 131489960]

約数ペア:

[(1, 131489960), (2, 65744980), (4, 32872490), (5, 26297992), (7, 18784280), (8, 16436245), (10, 13148996), (14, 9392140), (20, 6574498), (28, 4696070), (35, 3756856), (40, 3287249), (56, 2348035), (70, 1878428), (140, 939214), (280, 469607), (373, 352520), (746, 176260), (1259, 104440), (1492, 88130), (1865, 70504), (2518, 52220), (2611, 50360), (2984, 44065), (3730, 35252), (5036, 26110), (5222, 25180), (6295, 20888), (7460, 17626), (8813, 14920), (10072, 13055), (10444, 12590)]