28055020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:287

約数の個数: 96

約数和(自身を含む): 72576000

約数和(自身を除く): 44520980

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 53, 70, 76, 95, 106, 133, 140, 190, 199, 212, 265, 266, 371, 380, 398, 530, 532, 665, 742, 796, 995, 1007, 1060, 1330, 1393, 1484, 1855, 1990, 2014, 2660, 2786, 3710, 3781, 3980, 4028, 5035, 5572, 6965, 7049, 7420, 7562, 10070, 10547, 13930, 14098, 15124, 18905, 20140, 21094, 26467, 27860, 28196, 35245, 37810, 42188, 52735, 52934, 70490, 73829, 75620, 105470, 105868, 132335, 140980, 147658, 200393, 210940, 264670, 295316, 369145, 400786, 529340, 738290, 801572, 1001965, 1402751, 1476580, 2003930, 2805502, 4007860, 5611004, 7013755, 14027510, 28055020]

約数ペア:

[(1, 28055020), (2, 14027510), (4, 7013755), (5, 5611004), (7, 4007860), (10, 2805502), (14, 2003930), (19, 1476580), (20, 1402751), (28, 1001965), (35, 801572), (38, 738290), (53, 529340), (70, 400786), (76, 369145), (95, 295316), (106, 264670), (133, 210940), (140, 200393), (190, 147658), (199, 140980), (212, 132335), (265, 105868), (266, 105470), (371, 75620), (380, 73829), (398, 70490), (530, 52934), (532, 52735), (665, 42188), (742, 37810), (796, 35245), (995, 28196), (1007, 27860), (1060, 26467), (1330, 21094), (1393, 20140), (1484, 18905), (1855, 15124), (1990, 14098), (2014, 13930), (2660, 10547), (2786, 10070), (3710, 7562), (3781, 7420), (3980, 7049), (4028, 6965), (5035, 5572)]