20621600

素因数分解:

$2^5\times 5^2\times {\mathrm{149}}^1\times {\mathrm{173}}^1$

素因数の和:342

約数の個数: 72

約数和(自身を含む): 50973300

約数和(自身を除く): 30351700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 149, 160, 173, 200, 298, 346, 400, 596, 692, 745, 800, 865, 1192, 1384, 1490, 1730, 2384, 2768, 2980, 3460, 3725, 4325, 4768, 5536, 5960, 6920, 7450, 8650, 11920, 13840, 14900, 17300, 23840, 25777, 27680, 29800, 34600, 51554, 59600, 69200, 103108, 119200, 128885, 138400, 206216, 257770, 412432, 515540, 644425, 824864, 1031080, 1288850, 2062160, 2577700, 4124320, 5155400, 10310800, 20621600]

約数ペア:

[(1, 20621600), (2, 10310800), (4, 5155400), (5, 4124320), (8, 2577700), (10, 2062160), (16, 1288850), (20, 1031080), (25, 824864), (32, 644425), (40, 515540), (50, 412432), (80, 257770), (100, 206216), (149, 138400), (160, 128885), (173, 119200), (200, 103108), (298, 69200), (346, 59600), (400, 51554), (596, 34600), (692, 29800), (745, 27680), (800, 25777), (865, 23840), (1192, 17300), (1384, 14900), (1490, 13840), (1730, 11920), (2384, 8650), (2768, 7450), (2980, 6920), (3460, 5960), (3725, 5536), (4325, 4768)]