19489972

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 38304000

約数和(自身を除く): 18814028

約数列:

[1, 2, 4, 19, 29, 37, 38, 58, 74, 76, 116, 148, 239, 478, 551, 703, 956, 1073, 1102, 1406, 2146, 2204, 2812, 4292, 4541, 6931, 8843, 9082, 13862, 17686, 18164, 20387, 27724, 35372, 40774, 81548, 131689, 168017, 256447, 263378, 336034, 512894, 526756, 672068, 1025788, 4872493, 9744986, 19489972]

約数ペア:

[(1, 19489972), (2, 9744986), (4, 4872493), (19, 1025788), (29, 672068), (37, 526756), (38, 512894), (58, 336034), (74, 263378), (76, 256447), (116, 168017), (148, 131689), (239, 81548), (478, 40774), (551, 35372), (703, 27724), (956, 20387), (1073, 18164), (1102, 17686), (1406, 13862), (2146, 9082), (2204, 8843), (2812, 6931), (4292, 4541)]