8142280

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:190

約数の個数: 64

約数和(自身を含む): 19284480

約数和(自身を除く): 11142200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 61, 71, 94, 122, 142, 188, 235, 244, 284, 305, 355, 376, 470, 488, 568, 610, 710, 940, 1220, 1420, 1880, 2440, 2840, 2867, 3337, 4331, 5734, 6674, 8662, 11468, 13348, 14335, 16685, 17324, 21655, 22936, 26696, 28670, 33370, 34648, 43310, 57340, 66740, 86620, 114680, 133480, 173240, 203557, 407114, 814228, 1017785, 1628456, 2035570, 4071140, 8142280]

約数ペア:

[(1, 8142280), (2, 4071140), (4, 2035570), (5, 1628456), (8, 1017785), (10, 814228), (20, 407114), (40, 203557), (47, 173240), (61, 133480), (71, 114680), (94, 86620), (122, 66740), (142, 57340), (188, 43310), (235, 34648), (244, 33370), (284, 28670), (305, 26696), (355, 22936), (376, 21655), (470, 17324), (488, 16685), (568, 14335), (610, 13348), (710, 11468), (940, 8662), (1220, 6674), (1420, 5734), (1880, 4331), (2440, 3337), (2840, 2867)]