31215420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:204

約数の個数: 144

約数和(自身を含む): 100420320

約数和(自身を除く): 69204900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 43, 45, 60, 74, 86, 90, 109, 111, 129, 148, 172, 180, 185, 215, 218, 222, 258, 327, 333, 370, 387, 430, 436, 444, 516, 545, 555, 645, 654, 666, 740, 774, 860, 981, 1090, 1110, 1290, 1308, 1332, 1548, 1591, 1635, 1665, 1935, 1962, 2180, 2220, 2580, 3182, 3270, 3330, 3870, 3924, 4033, 4687, 4773, 4905, 6364, 6540, 6660, 7740, 7955, 8066, 9374, 9546, 9810, 12099, 14061, 14319, 15910, 16132, 18748, 19092, 19620, 20165, 23435, 23865, 24198, 28122, 28638, 31820, 36297, 40330, 42183, 46870, 47730, 48396, 56244, 57276, 60495, 70305, 71595, 72594, 80660, 84366, 93740, 95460, 120990, 140610, 143190, 145188, 168732, 173419, 181485, 210915, 241980, 281220, 286380, 346838, 362970, 421830, 520257, 693676, 725940, 843660, 867095, 1040514, 1560771, 1734190, 2081028, 2601285, 3121542, 3468380, 5202570, 6243084, 7803855, 10405140, 15607710, 31215420]

約数ペア:

[(1, 31215420), (2, 15607710), (3, 10405140), (4, 7803855), (5, 6243084), (6, 5202570), (9, 3468380), (10, 3121542), (12, 2601285), (15, 2081028), (18, 1734190), (20, 1560771), (30, 1040514), (36, 867095), (37, 843660), (43, 725940), (45, 693676), (60, 520257), (74, 421830), (86, 362970), (90, 346838), (109, 286380), (111, 281220), (129, 241980), (148, 210915), (172, 181485), (180, 173419), (185, 168732), (215, 145188), (218, 143190), (222, 140610), (258, 120990), (327, 95460), (333, 93740), (370, 84366), (387, 80660), (430, 72594), (436, 71595), (444, 70305), (516, 60495), (545, 57276), (555, 56244), (645, 48396), (654, 47730), (666, 46870), (740, 42183), (774, 40330), (860, 36297), (981, 31820), (1090, 28638), (1110, 28122), (1290, 24198), (1308, 23865), (1332, 23435), (1548, 20165), (1591, 19620), (1635, 19092), (1665, 18748), (1935, 16132), (1962, 15910), (2180, 14319), (2220, 14061), (2580, 12099), (3182, 9810), (3270, 9546), (3330, 9374), (3870, 8066), (3924, 7955), (4033, 7740), (4687, 6660), (4773, 6540), (4905, 6364)]