1644560

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{337}}^1$

素因数の和:411

約数の個数: 40

約数和(自身を含む): 3897816

約数和(自身を除く): 2253256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 337, 488, 610, 674, 976, 1220, 1348, 1685, 2440, 2696, 3370, 4880, 5392, 6740, 13480, 20557, 26960, 41114, 82228, 102785, 164456, 205570, 328912, 411140, 822280, 1644560]

約数ペア:

[(1, 1644560), (2, 822280), (4, 411140), (5, 328912), (8, 205570), (10, 164456), (16, 102785), (20, 82228), (40, 41114), (61, 26960), (80, 20557), (122, 13480), (244, 6740), (305, 5392), (337, 4880), (488, 3370), (610, 2696), (674, 2440), (976, 1685), (1220, 1348)]