8398760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:330

約数の個数: 64

約数和(自身を含む): 20433600

約数和(自身を除く): 12034840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 257, 344, 380, 430, 514, 760, 817, 860, 1028, 1285, 1634, 1720, 2056, 2570, 3268, 4085, 4883, 5140, 6536, 8170, 9766, 10280, 11051, 16340, 19532, 22102, 24415, 32680, 39064, 44204, 48830, 55255, 88408, 97660, 110510, 195320, 209969, 221020, 419938, 442040, 839876, 1049845, 1679752, 2099690, 4199380, 8398760]

約数ペア:

[(1, 8398760), (2, 4199380), (4, 2099690), (5, 1679752), (8, 1049845), (10, 839876), (19, 442040), (20, 419938), (38, 221020), (40, 209969), (43, 195320), (76, 110510), (86, 97660), (95, 88408), (152, 55255), (172, 48830), (190, 44204), (215, 39064), (257, 32680), (344, 24415), (380, 22102), (430, 19532), (514, 16340), (760, 11051), (817, 10280), (860, 9766), (1028, 8170), (1285, 6536), (1634, 5140), (1720, 4883), (2056, 4085), (2570, 3268)]