129223780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{131861}}^1$

素因数の和:131884

約数の個数: 36

約数和(自身を含む): 315677628

約数和(自身を除く): 186453848

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 131861, 263722, 527444, 659305, 923027, 1318610, 1846054, 2637220, 3692108, 4615135, 6461189, 9230270, 12922378, 18460540, 25844756, 32305945, 64611890, 129223780]

約数ペア:

[(1, 129223780), (2, 64611890), (4, 32305945), (5, 25844756), (7, 18460540), (10, 12922378), (14, 9230270), (20, 6461189), (28, 4615135), (35, 3692108), (49, 2637220), (70, 1846054), (98, 1318610), (140, 923027), (196, 659305), (245, 527444), (490, 263722), (980, 131861)]