20721636

素因数分解:

$2^2\times 3^3\times {\mathrm{13}}^1\times {\mathrm{14759}}^1$

素因数の和:14785

約数の個数: 48

約数和(自身を含む): 57859200

約数和(自身を除く): 37137564

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 108, 117, 156, 234, 351, 468, 702, 1404, 14759, 29518, 44277, 59036, 88554, 132831, 177108, 191867, 265662, 383734, 398493, 531324, 575601, 767468, 796986, 1151202, 1593972, 1726803, 2302404, 3453606, 5180409, 6907212, 10360818, 20721636]

約数ペア:

[(1, 20721636), (2, 10360818), (3, 6907212), (4, 5180409), (6, 3453606), (9, 2302404), (12, 1726803), (13, 1593972), (18, 1151202), (26, 796986), (27, 767468), (36, 575601), (39, 531324), (52, 398493), (54, 383734), (78, 265662), (108, 191867), (117, 177108), (156, 132831), (234, 88554), (351, 59036), (468, 44277), (702, 29518), (1404, 14759)]