19987459620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{523}}^1\times {\mathrm{4057}}^1$

素因数の和:4749

約数の個数: 96

約数和(自身を含む): 56442949248

約数和(自身を除く): 36455489628

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 157, 314, 471, 523, 628, 785, 942, 1046, 1569, 1570, 1884, 2092, 2355, 2615, 3138, 3140, 4057, 4710, 5230, 6276, 7845, 8114, 9420, 10460, 12171, 15690, 16228, 20285, 24342, 31380, 40570, 48684, 60855, 81140, 82111, 121710, 164222, 243420, 246333, 328444, 410555, 492666, 636949, 821110, 985332, 1231665, 1273898, 1642220, 1910847, 2121811, 2463330, 2547796, 3184745, 3821694, 4243622, 4926660, 6365433, 6369490, 7643388, 8487244, 9554235, 10609055, 12730866, 12738980, 19108470, 21218110, 25461732, 31827165, 38216940, 42436220, 63654330, 127308660, 333124327, 666248654, 999372981, 1332497308, 1665621635, 1998745962, 3331243270, 3997491924, 4996864905, 6662486540, 9993729810, 19987459620]

約数ペア:

[(1, 19987459620), (2, 9993729810), (3, 6662486540), (4, 4996864905), (5, 3997491924), (6, 3331243270), (10, 1998745962), (12, 1665621635), (15, 1332497308), (20, 999372981), (30, 666248654), (60, 333124327), (157, 127308660), (314, 63654330), (471, 42436220), (523, 38216940), (628, 31827165), (785, 25461732), (942, 21218110), (1046, 19108470), (1569, 12738980), (1570, 12730866), (1884, 10609055), (2092, 9554235), (2355, 8487244), (2615, 7643388), (3138, 6369490), (3140, 6365433), (4057, 4926660), (4710, 4243622), (5230, 3821694), (6276, 3184745), (7845, 2547796), (8114, 2463330), (9420, 2121811), (10460, 1910847), (12171, 1642220), (15690, 1273898), (16228, 1231665), (20285, 985332), (24342, 821110), (31380, 636949), (40570, 492666), (48684, 410555), (60855, 328444), (81140, 246333), (82111, 243420), (121710, 164222)]