20956860

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{197}}^2$

素因数の和:412

約数の個数: 72

約数和(自身を含む): 65531760

約数和(自身を除く): 44574900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 197, 270, 394, 540, 591, 788, 985, 1182, 1773, 1970, 2364, 2955, 3546, 3940, 5319, 5910, 7092, 8865, 10638, 11820, 17730, 21276, 26595, 35460, 38809, 53190, 77618, 106380, 116427, 155236, 194045, 232854, 349281, 388090, 465708, 582135, 698562, 776180, 1047843, 1164270, 1397124, 1746405, 2095686, 2328540, 3492810, 4191372, 5239215, 6985620, 10478430, 20956860]

約数ペア:

[(1, 20956860), (2, 10478430), (3, 6985620), (4, 5239215), (5, 4191372), (6, 3492810), (9, 2328540), (10, 2095686), (12, 1746405), (15, 1397124), (18, 1164270), (20, 1047843), (27, 776180), (30, 698562), (36, 582135), (45, 465708), (54, 388090), (60, 349281), (90, 232854), (108, 194045), (135, 155236), (180, 116427), (197, 106380), (270, 77618), (394, 53190), (540, 38809), (591, 35460), (788, 26595), (985, 21276), (1182, 17730), (1773, 11820), (1970, 10638), (2364, 8865), (2955, 7092), (3546, 5910), (3940, 5319)]