19939892

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1013}}^1$

素因数の和:1080

約数の個数: 48

約数和(自身を含む): 43155840

約数和(自身を除く): 23215948

約数列:

[1, 2, 4, 7, 14, 19, 28, 37, 38, 74, 76, 133, 148, 259, 266, 518, 532, 703, 1013, 1036, 1406, 2026, 2812, 4052, 4921, 7091, 9842, 14182, 19247, 19684, 28364, 37481, 38494, 74962, 76988, 134729, 149924, 262367, 269458, 524734, 538916, 712139, 1049468, 1424278, 2848556, 4984973, 9969946, 19939892]

約数ペア:

[(1, 19939892), (2, 9969946), (4, 4984973), (7, 2848556), (14, 1424278), (19, 1049468), (28, 712139), (37, 538916), (38, 524734), (74, 269458), (76, 262367), (133, 149924), (148, 134729), (259, 76988), (266, 74962), (518, 38494), (532, 37481), (703, 28364), (1013, 19684), (1036, 19247), (1406, 14182), (2026, 9842), (2812, 7091), (4052, 4921)]