18867640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{313}}^1$

素因数の和:472

約数の個数: 64

約数和(自身を含む): 46798560

約数和(自身を除く): 27930920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 137, 220, 274, 313, 440, 548, 626, 685, 1096, 1252, 1370, 1507, 1565, 2504, 2740, 3014, 3130, 3443, 5480, 6028, 6260, 6886, 7535, 12056, 12520, 13772, 15070, 17215, 27544, 30140, 34430, 42881, 60280, 68860, 85762, 137720, 171524, 214405, 343048, 428810, 471691, 857620, 943382, 1715240, 1886764, 2358455, 3773528, 4716910, 9433820, 18867640]

約数ペア:

[(1, 18867640), (2, 9433820), (4, 4716910), (5, 3773528), (8, 2358455), (10, 1886764), (11, 1715240), (20, 943382), (22, 857620), (40, 471691), (44, 428810), (55, 343048), (88, 214405), (110, 171524), (137, 137720), (220, 85762), (274, 68860), (313, 60280), (440, 42881), (548, 34430), (626, 30140), (685, 27544), (1096, 17215), (1252, 15070), (1370, 13772), (1507, 12520), (1565, 12056), (2504, 7535), (2740, 6886), (3014, 6260), (3130, 6028), (3443, 5480)]