19910704

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:178

約数の個数: 80

約数和(自身を含む): 44997120

約数和(自身を除く): 25086416

約数列:

[1, 2, 4, 8, 11, 16, 22, 29, 44, 47, 58, 83, 88, 94, 116, 166, 176, 188, 232, 319, 332, 376, 464, 517, 638, 664, 752, 913, 1034, 1276, 1328, 1363, 1826, 2068, 2407, 2552, 2726, 3652, 3901, 4136, 4814, 5104, 5452, 7304, 7802, 8272, 9628, 10904, 14608, 14993, 15604, 19256, 21808, 26477, 29986, 31208, 38512, 42911, 52954, 59972, 62416, 85822, 105908, 113129, 119944, 171644, 211816, 226258, 239888, 343288, 423632, 452516, 686576, 905032, 1244419, 1810064, 2488838, 4977676, 9955352, 19910704]

約数ペア:

[(1, 19910704), (2, 9955352), (4, 4977676), (8, 2488838), (11, 1810064), (16, 1244419), (22, 905032), (29, 686576), (44, 452516), (47, 423632), (58, 343288), (83, 239888), (88, 226258), (94, 211816), (116, 171644), (166, 119944), (176, 113129), (188, 105908), (232, 85822), (319, 62416), (332, 59972), (376, 52954), (464, 42911), (517, 38512), (638, 31208), (664, 29986), (752, 26477), (913, 21808), (1034, 19256), (1276, 15604), (1328, 14993), (1363, 14608), (1826, 10904), (2068, 9628), (2407, 8272), (2552, 7802), (2726, 7304), (3652, 5452), (3901, 5104), (4136, 4814)]