20997267444

素因数分解:

$2^2\times 3^6\times {\mathrm{1993}}^1\times {\mathrm{3613}}^1$

素因数の和:5628

約数の個数: 84

約数和(自身を含む): 55135523716

約数和(自身を除く): 34138256272

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 1993, 2916, 3613, 3986, 5979, 7226, 7972, 10839, 11958, 14452, 17937, 21678, 23916, 32517, 35874, 43356, 53811, 65034, 71748, 97551, 107622, 130068, 161433, 195102, 215244, 292653, 322866, 390204, 484299, 585306, 645732, 877959, 968598, 1170612, 1452897, 1755918, 1937196, 2633877, 2905794, 3511836, 5267754, 5811588, 7200709, 10535508, 14401418, 21602127, 28802836, 43204254, 64806381, 86408508, 129612762, 194419143, 259225524, 388838286, 583257429, 777676572, 1166514858, 1749772287, 2333029716, 3499544574, 5249316861, 6999089148, 10498633722, 20997267444]

約数ペア:

[(1, 20997267444), (2, 10498633722), (3, 6999089148), (4, 5249316861), (6, 3499544574), (9, 2333029716), (12, 1749772287), (18, 1166514858), (27, 777676572), (36, 583257429), (54, 388838286), (81, 259225524), (108, 194419143), (162, 129612762), (243, 86408508), (324, 64806381), (486, 43204254), (729, 28802836), (972, 21602127), (1458, 14401418), (1993, 10535508), (2916, 7200709), (3613, 5811588), (3986, 5267754), (5979, 3511836), (7226, 2905794), (7972, 2633877), (10839, 1937196), (11958, 1755918), (14452, 1452897), (17937, 1170612), (21678, 968598), (23916, 877959), (32517, 645732), (35874, 585306), (43356, 484299), (53811, 390204), (65034, 322866), (71748, 292653), (97551, 215244), (107622, 195102), (130068, 161433)]