20771960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2777}}^1$

素因数の和:2816

約数の個数: 64

約数和(自身を含む): 54004320

約数和(自身を除く): 33232360

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2777, 3740, 5554, 7480, 11108, 13885, 22216, 27770, 30547, 47209, 55540, 61094, 94418, 111080, 122188, 152735, 188836, 236045, 244376, 305470, 377672, 472090, 519299, 610940, 944180, 1038598, 1221880, 1888360, 2077196, 2596495, 4154392, 5192990, 10385980, 20771960]

約数ペア:

[(1, 20771960), (2, 10385980), (4, 5192990), (5, 4154392), (8, 2596495), (10, 2077196), (11, 1888360), (17, 1221880), (20, 1038598), (22, 944180), (34, 610940), (40, 519299), (44, 472090), (55, 377672), (68, 305470), (85, 244376), (88, 236045), (110, 188836), (136, 152735), (170, 122188), (187, 111080), (220, 94418), (340, 61094), (374, 55540), (440, 47209), (680, 30547), (748, 27770), (935, 22216), (1496, 13885), (1870, 11108), (2777, 7480), (3740, 5554)]