21225420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3187}}^1$

素因数の和:3239

約数の個数: 72

約数和(自身を含む): 66144624

約数和(自身を除く): 44919204

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 3187, 3330, 6374, 6660, 9561, 12748, 15935, 19122, 28683, 31870, 38244, 47805, 57366, 63740, 95610, 114732, 117919, 143415, 191220, 235838, 286830, 353757, 471676, 573660, 589595, 707514, 1061271, 1179190, 1415028, 1768785, 2122542, 2358380, 3537570, 4245084, 5306355, 7075140, 10612710, 21225420]

約数ペア:

[(1, 21225420), (2, 10612710), (3, 7075140), (4, 5306355), (5, 4245084), (6, 3537570), (9, 2358380), (10, 2122542), (12, 1768785), (15, 1415028), (18, 1179190), (20, 1061271), (30, 707514), (36, 589595), (37, 573660), (45, 471676), (60, 353757), (74, 286830), (90, 235838), (111, 191220), (148, 143415), (180, 117919), (185, 114732), (222, 95610), (333, 63740), (370, 57366), (444, 47805), (555, 38244), (666, 31870), (740, 28683), (1110, 19122), (1332, 15935), (1665, 12748), (2220, 9561), (3187, 6660), (3330, 6374)]