19987140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1861}}^1$

素因数の和:2052

約数の個数: 48

約数和(自身を含む): 56306880

約数和(自身を除く): 36319740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 179, 358, 537, 716, 895, 1074, 1790, 1861, 2148, 2685, 3580, 3722, 5370, 5583, 7444, 9305, 10740, 11166, 18610, 22332, 27915, 37220, 55830, 111660, 333119, 666238, 999357, 1332476, 1665595, 1998714, 3331190, 3997428, 4996785, 6662380, 9993570, 19987140]

約数ペア:

[(1, 19987140), (2, 9993570), (3, 6662380), (4, 4996785), (5, 3997428), (6, 3331190), (10, 1998714), (12, 1665595), (15, 1332476), (20, 999357), (30, 666238), (60, 333119), (179, 111660), (358, 55830), (537, 37220), (716, 27915), (895, 22332), (1074, 18610), (1790, 11166), (1861, 10740), (2148, 9305), (2685, 7444), (3580, 5583), (3722, 5370)]