81673780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{269}}^1$

素因数の和:361

約数の個数: 96

約数和(自身を含む): 195955200

約数和(自身を除く): 114281420

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 47, 68, 76, 85, 94, 95, 170, 188, 190, 235, 269, 323, 340, 380, 470, 538, 646, 799, 893, 940, 1076, 1292, 1345, 1598, 1615, 1786, 2690, 3196, 3230, 3572, 3995, 4465, 4573, 5111, 5380, 6460, 7990, 8930, 9146, 10222, 12643, 15181, 15980, 17860, 18292, 20444, 22865, 25286, 25555, 30362, 45730, 50572, 51110, 60724, 63215, 75905, 86887, 91460, 102220, 126430, 151810, 173774, 214931, 240217, 252860, 303620, 347548, 429862, 434435, 480434, 859724, 868870, 960868, 1074655, 1201085, 1737740, 2149310, 2402170, 4083689, 4298620, 4804340, 8167378, 16334756, 20418445, 40836890, 81673780]

約数ペア:

[(1, 81673780), (2, 40836890), (4, 20418445), (5, 16334756), (10, 8167378), (17, 4804340), (19, 4298620), (20, 4083689), (34, 2402170), (38, 2149310), (47, 1737740), (68, 1201085), (76, 1074655), (85, 960868), (94, 868870), (95, 859724), (170, 480434), (188, 434435), (190, 429862), (235, 347548), (269, 303620), (323, 252860), (340, 240217), (380, 214931), (470, 173774), (538, 151810), (646, 126430), (799, 102220), (893, 91460), (940, 86887), (1076, 75905), (1292, 63215), (1345, 60724), (1598, 51110), (1615, 50572), (1786, 45730), (2690, 30362), (3196, 25555), (3230, 25286), (3572, 22865), (3995, 20444), (4465, 18292), (4573, 17860), (5111, 15980), (5380, 15181), (6460, 12643), (7990, 10222), (8930, 9146)]