20145656560

素因数分解:

$2^4\times 5^1\times {\mathrm{313}}^1\times {\mathrm{571}}^1\times {\mathrm{1409}}^1$

素因数の和:2306

約数の個数: 80

約数和(自身を含む): 47103994080

約数和(自身を除く): 26958337520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 313, 571, 626, 1142, 1252, 1409, 1565, 2284, 2504, 2818, 2855, 3130, 4568, 5008, 5636, 5710, 6260, 7045, 9136, 11272, 11420, 12520, 14090, 22544, 22840, 25040, 28180, 45680, 56360, 112720, 178723, 357446, 441017, 714892, 804539, 882034, 893615, 1429784, 1609078, 1764068, 1787230, 2205085, 2859568, 3218156, 3528136, 3574460, 4022695, 4410170, 6436312, 7056272, 7148920, 8045390, 8820340, 12872624, 14297840, 16090780, 17640680, 32181560, 35281360, 64363120, 251820707, 503641414, 1007282828, 1259103535, 2014565656, 2518207070, 4029131312, 5036414140, 10072828280, 20145656560]

約数ペア:

[(1, 20145656560), (2, 10072828280), (4, 5036414140), (5, 4029131312), (8, 2518207070), (10, 2014565656), (16, 1259103535), (20, 1007282828), (40, 503641414), (80, 251820707), (313, 64363120), (571, 35281360), (626, 32181560), (1142, 17640680), (1252, 16090780), (1409, 14297840), (1565, 12872624), (2284, 8820340), (2504, 8045390), (2818, 7148920), (2855, 7056272), (3130, 6436312), (4568, 4410170), (5008, 4022695), (5636, 3574460), (5710, 3528136), (6260, 3218156), (7045, 2859568), (9136, 2205085), (11272, 1787230), (11420, 1764068), (12520, 1609078), (14090, 1429784), (22544, 893615), (22840, 882034), (25040, 804539), (28180, 714892), (45680, 441017), (56360, 357446), (112720, 178723)]