51378460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{509}}^1$

素因数の和:635

約数の個数: 72

約数和(自身を含む): 126977760

約数和(自身を除く): 75599300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 103, 140, 196, 206, 245, 412, 490, 509, 515, 721, 980, 1018, 1030, 1442, 2036, 2060, 2545, 2884, 3563, 3605, 5047, 5090, 7126, 7210, 10094, 10180, 14252, 14420, 17815, 20188, 24941, 25235, 35630, 49882, 50470, 52427, 71260, 99764, 100940, 104854, 124705, 209708, 249410, 262135, 366989, 498820, 524270, 733978, 1048540, 1467956, 1834945, 2568923, 3669890, 5137846, 7339780, 10275692, 12844615, 25689230, 51378460]

約数ペア:

[(1, 51378460), (2, 25689230), (4, 12844615), (5, 10275692), (7, 7339780), (10, 5137846), (14, 3669890), (20, 2568923), (28, 1834945), (35, 1467956), (49, 1048540), (70, 733978), (98, 524270), (103, 498820), (140, 366989), (196, 262135), (206, 249410), (245, 209708), (412, 124705), (490, 104854), (509, 100940), (515, 99764), (721, 71260), (980, 52427), (1018, 50470), (1030, 49882), (1442, 35630), (2036, 25235), (2060, 24941), (2545, 20188), (2884, 17815), (3563, 14420), (3605, 14252), (5047, 10180), (5090, 10094), (7126, 7210)]