20178663484

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^2\times {\mathrm{89}}^1\times {\mathrm{4817}}^1$

素因数の和:4999

約数の個数: 72

約数和(自身を含む): 41839126560

約数和(自身を除く): 21660463076

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 89, 164, 178, 287, 356, 574, 623, 1148, 1246, 1681, 2492, 3362, 3649, 4817, 6724, 7298, 9634, 11767, 14596, 19268, 23534, 25543, 33719, 47068, 51086, 67438, 102172, 134876, 149609, 197497, 299218, 394994, 428713, 598436, 789988, 857426, 1047263, 1382479, 1714852, 2094526, 2764958, 3000991, 4189052, 5529916, 6001982, 8097377, 12003964, 16194754, 17577233, 32389508, 35154466, 56681639, 70308932, 113363278, 123040631, 226726556, 246081262, 492162524, 720666553, 1441333106, 2882666212, 5044665871, 10089331742, 20178663484]

約数ペア:

[(1, 20178663484), (2, 10089331742), (4, 5044665871), (7, 2882666212), (14, 1441333106), (28, 720666553), (41, 492162524), (82, 246081262), (89, 226726556), (164, 123040631), (178, 113363278), (287, 70308932), (356, 56681639), (574, 35154466), (623, 32389508), (1148, 17577233), (1246, 16194754), (1681, 12003964), (2492, 8097377), (3362, 6001982), (3649, 5529916), (4817, 4189052), (6724, 3000991), (7298, 2764958), (9634, 2094526), (11767, 1714852), (14596, 1382479), (19268, 1047263), (23534, 857426), (25543, 789988), (33719, 598436), (47068, 428713), (51086, 394994), (67438, 299218), (102172, 197497), (134876, 149609)]