21388260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1847}}^1$

素因数の和:2052

約数の個数: 48

約数和(自身を含む): 60230016

約数和(自身を除く): 38841756

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 193, 386, 579, 772, 965, 1158, 1847, 1930, 2316, 2895, 3694, 3860, 5541, 5790, 7388, 9235, 11082, 11580, 18470, 22164, 27705, 36940, 55410, 110820, 356471, 712942, 1069413, 1425884, 1782355, 2138826, 3564710, 4277652, 5347065, 7129420, 10694130, 21388260]

約数ペア:

[(1, 21388260), (2, 10694130), (3, 7129420), (4, 5347065), (5, 4277652), (6, 3564710), (10, 2138826), (12, 1782355), (15, 1425884), (20, 1069413), (30, 712942), (60, 356471), (193, 110820), (386, 55410), (579, 36940), (772, 27705), (965, 22164), (1158, 18470), (1847, 11580), (1930, 11082), (2316, 9235), (2895, 7388), (3694, 5790), (3860, 5541)]