21445570

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:582

約数の個数: 32

約数和(自身を含む): 40014000

約数和(自身を除く): 18568430

約数列:

[1, 2, 5, 10, 37, 74, 149, 185, 298, 370, 389, 745, 778, 1490, 1945, 3890, 5513, 11026, 14393, 27565, 28786, 55130, 57961, 71965, 115922, 143930, 289805, 579610, 2144557, 4289114, 10722785, 21445570]

約数ペア:

[(1, 21445570), (2, 10722785), (5, 4289114), (10, 2144557), (37, 579610), (74, 289805), (149, 143930), (185, 115922), (298, 71965), (370, 57961), (389, 55130), (745, 28786), (778, 27565), (1490, 14393), (1945, 11026), (3890, 5513)]