21709058

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:255

約数の個数: 48

約数和(自身を含む): 40629600

約数和(自身を除く): 18920542

約数列:

[1, 2, 7, 14, 19, 38, 49, 89, 98, 131, 133, 178, 262, 266, 623, 917, 931, 1246, 1691, 1834, 1862, 2489, 3382, 4361, 4978, 6419, 8722, 11659, 11837, 12838, 17423, 23318, 23674, 34846, 81613, 82859, 121961, 163226, 165718, 221521, 243922, 443042, 571291, 1142582, 1550647, 3101294, 10854529, 21709058]

約数ペア:

[(1, 21709058), (2, 10854529), (7, 3101294), (14, 1550647), (19, 1142582), (38, 571291), (49, 443042), (89, 243922), (98, 221521), (131, 165718), (133, 163226), (178, 121961), (262, 82859), (266, 81613), (623, 34846), (917, 23674), (931, 23318), (1246, 17423), (1691, 12838), (1834, 11837), (1862, 11659), (2489, 8722), (3382, 6419), (4361, 4978)]