19739488

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:367

約数の個数: 48

約数和(自身を含む): 40824000

約数和(自身を除く): 21084512

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 89, 116, 178, 232, 239, 356, 464, 478, 712, 928, 956, 1424, 1912, 2581, 2848, 3824, 5162, 6931, 7648, 10324, 13862, 20648, 21271, 27724, 41296, 42542, 55448, 82592, 85084, 110896, 170168, 221792, 340336, 616859, 680672, 1233718, 2467436, 4934872, 9869744, 19739488]

約数ペア:

[(1, 19739488), (2, 9869744), (4, 4934872), (8, 2467436), (16, 1233718), (29, 680672), (32, 616859), (58, 340336), (89, 221792), (116, 170168), (178, 110896), (232, 85084), (239, 82592), (356, 55448), (464, 42542), (478, 41296), (712, 27724), (928, 21271), (956, 20648), (1424, 13862), (1912, 10324), (2581, 7648), (2848, 6931), (3824, 5162)]