20157156

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^2\times {\mathrm{409}}^1$

素因数の和:493

約数の個数: 54

約数和(自身を含む): 52495170

約数和(自身を除く): 32338014

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 74, 111, 148, 222, 333, 409, 444, 666, 818, 1227, 1332, 1369, 1636, 2454, 2738, 3681, 4107, 4908, 5476, 7362, 8214, 12321, 14724, 15133, 16428, 24642, 30266, 45399, 49284, 60532, 90798, 136197, 181596, 272394, 544788, 559921, 1119842, 1679763, 2239684, 3359526, 5039289, 6719052, 10078578, 20157156]

約数ペア:

[(1, 20157156), (2, 10078578), (3, 6719052), (4, 5039289), (6, 3359526), (9, 2239684), (12, 1679763), (18, 1119842), (36, 559921), (37, 544788), (74, 272394), (111, 181596), (148, 136197), (222, 90798), (333, 60532), (409, 49284), (444, 45399), (666, 30266), (818, 24642), (1227, 16428), (1332, 15133), (1369, 14724), (1636, 12321), (2454, 8214), (2738, 7362), (3681, 5476), (4107, 4908)]