1209997580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{127}}^2$

素因数の和:316

約数の個数: 108

約数和(自身を含む): 2905971264

約数和(自身を除く): 1695973684

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 121, 124, 127, 155, 220, 242, 254, 310, 341, 484, 508, 605, 620, 635, 682, 1210, 1270, 1364, 1397, 1705, 2420, 2540, 2794, 3410, 3751, 3937, 5588, 6820, 6985, 7502, 7874, 13970, 15004, 15367, 15748, 16129, 18755, 19685, 27940, 30734, 32258, 37510, 39370, 43307, 61468, 64516, 75020, 76835, 78740, 80645, 86614, 153670, 161290, 173228, 177419, 216535, 307340, 322580, 354838, 433070, 476377, 499999, 709676, 866140, 887095, 952754, 999998, 1774190, 1905508, 1951609, 1999996, 2381885, 2499995, 3548380, 3903218, 4763770, 4999990, 5499989, 7806436, 9527540, 9758045, 9999980, 10999978, 19516090, 21999956, 27499945, 39032180, 54999890, 60499879, 109999780, 120999758, 241999516, 302499395, 604998790, 1209997580]

約数ペア:

[(1, 1209997580), (2, 604998790), (4, 302499395), (5, 241999516), (10, 120999758), (11, 109999780), (20, 60499879), (22, 54999890), (31, 39032180), (44, 27499945), (55, 21999956), (62, 19516090), (110, 10999978), (121, 9999980), (124, 9758045), (127, 9527540), (155, 7806436), (220, 5499989), (242, 4999990), (254, 4763770), (310, 3903218), (341, 3548380), (484, 2499995), (508, 2381885), (605, 1999996), (620, 1951609), (635, 1905508), (682, 1774190), (1210, 999998), (1270, 952754), (1364, 887095), (1397, 866140), (1705, 709676), (2420, 499999), (2540, 476377), (2794, 433070), (3410, 354838), (3751, 322580), (3937, 307340), (5588, 216535), (6820, 177419), (6985, 173228), (7502, 161290), (7874, 153670), (13970, 86614), (15004, 80645), (15367, 78740), (15748, 76835), (16129, 75020), (18755, 64516), (19685, 61468), (27940, 43307), (30734, 39370), (32258, 37510)]