20954872

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1549}}^1$

素因数の和:1663

約数の個数: 32

約数和(自身を含む): 41850000

約数和(自身を除く): 20895128

約数列:

[1, 2, 4, 8, 19, 38, 76, 89, 152, 178, 356, 712, 1549, 1691, 3098, 3382, 6196, 6764, 12392, 13528, 29431, 58862, 117724, 137861, 235448, 275722, 551444, 1102888, 2619359, 5238718, 10477436, 20954872]

約数ペア:

[(1, 20954872), (2, 10477436), (4, 5238718), (8, 2619359), (19, 1102888), (38, 551444), (76, 275722), (89, 235448), (152, 137861), (178, 117724), (356, 58862), (712, 29431), (1549, 13528), (1691, 12392), (3098, 6764), (3382, 6196)]