55615980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{18917}}^1$

素因数の和:18943

約数の個数: 72

約数和(自身を含む): 181158768

約数和(自身を除く): 125542788

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 18917, 37834, 56751, 75668, 94585, 113502, 132419, 189170, 227004, 264838, 283755, 378340, 397257, 529676, 567510, 662095, 794514, 926933, 1135020, 1324190, 1589028, 1853866, 1986285, 2648380, 2780799, 3707732, 3972570, 4634665, 5561598, 7945140, 9269330, 11123196, 13903995, 18538660, 27807990, 55615980]

約数ペア:

[(1, 55615980), (2, 27807990), (3, 18538660), (4, 13903995), (5, 11123196), (6, 9269330), (7, 7945140), (10, 5561598), (12, 4634665), (14, 3972570), (15, 3707732), (20, 2780799), (21, 2648380), (28, 1986285), (30, 1853866), (35, 1589028), (42, 1324190), (49, 1135020), (60, 926933), (70, 794514), (84, 662095), (98, 567510), (105, 529676), (140, 397257), (147, 378340), (196, 283755), (210, 264838), (245, 227004), (294, 189170), (420, 132419), (490, 113502), (588, 94585), (735, 75668), (980, 56751), (1470, 37834), (2940, 18917)]