19997442

素因数分解:

$2^1\times 3^5\times {\mathrm{23}}^1\times {\mathrm{1789}}^1$

素因数の和:1829

約数の個数: 48

約数和(自身を含む): 46912320

約数和(自身を除く): 26914878

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 81, 138, 162, 207, 243, 414, 486, 621, 1242, 1789, 1863, 3578, 3726, 5367, 5589, 10734, 11178, 16101, 32202, 41147, 48303, 82294, 96606, 123441, 144909, 246882, 289818, 370323, 434727, 740646, 869454, 1110969, 2221938, 3332907, 6665814, 9998721, 19997442]

約数ペア:

[(1, 19997442), (2, 9998721), (3, 6665814), (6, 3332907), (9, 2221938), (18, 1110969), (23, 869454), (27, 740646), (46, 434727), (54, 370323), (69, 289818), (81, 246882), (138, 144909), (162, 123441), (207, 96606), (243, 82294), (414, 48303), (486, 41147), (621, 32202), (1242, 16101), (1789, 11178), (1863, 10734), (3578, 5589), (3726, 5367)]