261288400

素因数分解:

$2^4\times 5^2\times {\mathrm{419}}^1\times {\mathrm{1559}}^1$

素因数の和:1996

約数の個数: 60

約数和(自身を含む): 629647200

約数和(自身を除く): 368358800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 419, 838, 1559, 1676, 2095, 3118, 3352, 4190, 6236, 6704, 7795, 8380, 10475, 12472, 15590, 16760, 20950, 24944, 31180, 33520, 38975, 41900, 62360, 77950, 83800, 124720, 155900, 167600, 311800, 623600, 653221, 1306442, 2612884, 3266105, 5225768, 6532210, 10451536, 13064420, 16330525, 26128840, 32661050, 52257680, 65322100, 130644200, 261288400]

約数ペア:

[(1, 261288400), (2, 130644200), (4, 65322100), (5, 52257680), (8, 32661050), (10, 26128840), (16, 16330525), (20, 13064420), (25, 10451536), (40, 6532210), (50, 5225768), (80, 3266105), (100, 2612884), (200, 1306442), (400, 653221), (419, 623600), (838, 311800), (1559, 167600), (1676, 155900), (2095, 124720), (3118, 83800), (3352, 77950), (4190, 62360), (6236, 41900), (6704, 38975), (7795, 33520), (8380, 31180), (10475, 24944), (12472, 20950), (15590, 16760)]