20692520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1433}}^1$

素因数の和:1482

約数の個数: 48

約数和(自身を含む): 49171860

約数和(自身を除く): 28479340

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1433, 1444, 1805, 2866, 2888, 3610, 5732, 7165, 7220, 11464, 14330, 14440, 27227, 28660, 54454, 57320, 108908, 136135, 217816, 272270, 517313, 544540, 1034626, 1089080, 2069252, 2586565, 4138504, 5173130, 10346260, 20692520]

約数ペア:

[(1, 20692520), (2, 10346260), (4, 5173130), (5, 4138504), (8, 2586565), (10, 2069252), (19, 1089080), (20, 1034626), (38, 544540), (40, 517313), (76, 272270), (95, 217816), (152, 136135), (190, 108908), (361, 57320), (380, 54454), (722, 28660), (760, 27227), (1433, 14440), (1444, 14330), (1805, 11464), (2866, 7220), (2888, 7165), (3610, 5732)]