81699620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{12647}}^1$

素因数の和:12692

約数の個数: 48

約数和(自身を含む): 191237760

約数和(自身を除く): 109538140

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3230, 6460, 12647, 25294, 50588, 63235, 126470, 214999, 240293, 252940, 429998, 480586, 859996, 961172, 1074995, 1201465, 2149990, 2402930, 4084981, 4299980, 4805860, 8169962, 16339924, 20424905, 40849810, 81699620]

約数ペア:

[(1, 81699620), (2, 40849810), (4, 20424905), (5, 16339924), (10, 8169962), (17, 4805860), (19, 4299980), (20, 4084981), (34, 2402930), (38, 2149990), (68, 1201465), (76, 1074995), (85, 961172), (95, 859996), (170, 480586), (190, 429998), (323, 252940), (340, 240293), (380, 214999), (646, 126470), (1292, 63235), (1615, 50588), (3230, 25294), (6460, 12647)]