19816740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1237}}^1$

素因数の和:1341

約数の個数: 72

約数和(自身を含む): 60835320

約数和(自身を除く): 41018580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 89, 90, 178, 180, 267, 356, 445, 534, 801, 890, 1068, 1237, 1335, 1602, 1780, 2474, 2670, 3204, 3711, 4005, 4948, 5340, 6185, 7422, 8010, 11133, 12370, 14844, 16020, 18555, 22266, 24740, 37110, 44532, 55665, 74220, 110093, 111330, 220186, 222660, 330279, 440372, 550465, 660558, 990837, 1100930, 1321116, 1651395, 1981674, 2201860, 3302790, 3963348, 4954185, 6605580, 9908370, 19816740]

約数ペア:

[(1, 19816740), (2, 9908370), (3, 6605580), (4, 4954185), (5, 3963348), (6, 3302790), (9, 2201860), (10, 1981674), (12, 1651395), (15, 1321116), (18, 1100930), (20, 990837), (30, 660558), (36, 550465), (45, 440372), (60, 330279), (89, 222660), (90, 220186), (178, 111330), (180, 110093), (267, 74220), (356, 55665), (445, 44532), (534, 37110), (801, 24740), (890, 22266), (1068, 18555), (1237, 16020), (1335, 14844), (1602, 12370), (1780, 11133), (2474, 8010), (2670, 7422), (3204, 6185), (3711, 5340), (4005, 4948)]