19780607

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 26002944

約数和(自身を除く): 6222337

約数列:

[1, 7, 11, 37, 53, 77, 131, 259, 371, 407, 583, 917, 1441, 1961, 2849, 4081, 4847, 6943, 10087, 13727, 21571, 33929, 48601, 53317, 76373, 150997, 256891, 373219, 534611, 1798237, 2825801, 19780607]

約数ペア:

[(1, 19780607), (7, 2825801), (11, 1798237), (37, 534611), (53, 373219), (77, 256891), (131, 150997), (259, 76373), (371, 53317), (407, 48601), (583, 33929), (917, 21571), (1441, 13727), (1961, 10087), (2849, 6943), (4081, 4847)]