208859120

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{337}}^1$

素因数の和:538

約数の個数: 80

約数和(自身を含む): 498920448

約数和(自身を除く): 290061328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 127, 244, 254, 305, 337, 488, 508, 610, 635, 674, 976, 1016, 1220, 1270, 1348, 1685, 2032, 2440, 2540, 2696, 3370, 4880, 5080, 5392, 6740, 7747, 10160, 13480, 15494, 20557, 26960, 30988, 38735, 41114, 42799, 61976, 77470, 82228, 85598, 102785, 123952, 154940, 164456, 171196, 205570, 213995, 309880, 328912, 342392, 411140, 427990, 619760, 684784, 822280, 855980, 1644560, 1711960, 2610739, 3423920, 5221478, 10442956, 13053695, 20885912, 26107390, 41771824, 52214780, 104429560, 208859120]

約数ペア:

[(1, 208859120), (2, 104429560), (4, 52214780), (5, 41771824), (8, 26107390), (10, 20885912), (16, 13053695), (20, 10442956), (40, 5221478), (61, 3423920), (80, 2610739), (122, 1711960), (127, 1644560), (244, 855980), (254, 822280), (305, 684784), (337, 619760), (488, 427990), (508, 411140), (610, 342392), (635, 328912), (674, 309880), (976, 213995), (1016, 205570), (1220, 171196), (1270, 164456), (1348, 154940), (1685, 123952), (2032, 102785), (2440, 85598), (2540, 82228), (2696, 77470), (3370, 61976), (4880, 42799), (5080, 41114), (5392, 38735), (6740, 30988), (7747, 26960), (10160, 20557), (13480, 15494)]