19899424

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:289

約数の個数: 48

約数和(自身を含む): 40715136

約数和(自身を除く): 20815712

約数列:

[1, 2, 4, 8, 16, 32, 47, 94, 101, 131, 188, 202, 262, 376, 404, 524, 752, 808, 1048, 1504, 1616, 2096, 3232, 4192, 4747, 6157, 9494, 12314, 13231, 18988, 24628, 26462, 37976, 49256, 52924, 75952, 98512, 105848, 151904, 197024, 211696, 423392, 621857, 1243714, 2487428, 4974856, 9949712, 19899424]

約数ペア:

[(1, 19899424), (2, 9949712), (4, 4974856), (8, 2487428), (16, 1243714), (32, 621857), (47, 423392), (94, 211696), (101, 197024), (131, 151904), (188, 105848), (202, 98512), (262, 75952), (376, 52924), (404, 49256), (524, 37976), (752, 26462), (808, 24628), (1048, 18988), (1504, 13231), (1616, 12314), (2096, 9494), (3232, 6157), (4192, 4747)]