2080490920

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{5309}}^1$

素因数の和:5518

約数の個数: 64

約数和(自身を含む): 4777088400

約数和(自身を除く): 2696597480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 101, 194, 202, 388, 404, 485, 505, 776, 808, 970, 1010, 1940, 2020, 3880, 4040, 5309, 9797, 10618, 19594, 21236, 26545, 39188, 42472, 48985, 53090, 78376, 97970, 106180, 195940, 212360, 391880, 514973, 536209, 1029946, 1072418, 2059892, 2144836, 2574865, 2681045, 4119784, 4289672, 5149730, 5362090, 10299460, 10724180, 20598920, 21448360, 52012273, 104024546, 208049092, 260061365, 416098184, 520122730, 1040245460, 2080490920]

約数ペア:

[(1, 2080490920), (2, 1040245460), (4, 520122730), (5, 416098184), (8, 260061365), (10, 208049092), (20, 104024546), (40, 52012273), (97, 21448360), (101, 20598920), (194, 10724180), (202, 10299460), (388, 5362090), (404, 5149730), (485, 4289672), (505, 4119784), (776, 2681045), (808, 2574865), (970, 2144836), (1010, 2059892), (1940, 1072418), (2020, 1029946), (3880, 536209), (4040, 514973), (5309, 391880), (9797, 212360), (10618, 195940), (19594, 106180), (21236, 97970), (26545, 78376), (39188, 53090), (42472, 48985)]