20573180

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 24786820

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 79, 116, 145, 158, 290, 316, 395, 449, 580, 790, 898, 1580, 1796, 2245, 2291, 4490, 4582, 8980, 9164, 11455, 13021, 22910, 26042, 35471, 45820, 52084, 65105, 70942, 130210, 141884, 177355, 260420, 354710, 709420, 1028659, 2057318, 4114636, 5143295, 10286590, 20573180]

約数ペア:

[(1, 20573180), (2, 10286590), (4, 5143295), (5, 4114636), (10, 2057318), (20, 1028659), (29, 709420), (58, 354710), (79, 260420), (116, 177355), (145, 141884), (158, 130210), (290, 70942), (316, 65105), (395, 52084), (449, 45820), (580, 35471), (790, 26042), (898, 22910), (1580, 13021), (1796, 11455), (2245, 9164), (2291, 8980), (4490, 4582)]