28215180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^3\times {\mathrm{457}}^1$

素因数の和:493

約数の個数: 144

約数和(自身を含む): 100027200

約数和(自身を除く): 71812020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 343, 420, 441, 457, 490, 588, 630, 686, 735, 882, 914, 980, 1029, 1260, 1371, 1372, 1470, 1715, 1764, 1828, 2058, 2205, 2285, 2742, 2940, 3087, 3199, 3430, 4113, 4116, 4410, 4570, 5145, 5484, 6174, 6398, 6855, 6860, 8226, 8820, 9140, 9597, 10290, 12348, 12796, 13710, 15435, 15995, 16452, 19194, 20565, 20580, 22393, 27420, 28791, 30870, 31990, 38388, 41130, 44786, 47985, 57582, 61740, 63980, 67179, 82260, 89572, 95970, 111965, 115164, 134358, 143955, 156751, 191940, 201537, 223930, 268716, 287910, 313502, 335895, 403074, 447860, 470253, 575820, 627004, 671790, 783755, 806148, 940506, 1007685, 1343580, 1410759, 1567510, 1881012, 2015370, 2351265, 2821518, 3135020, 4030740, 4702530, 5643036, 7053795, 9405060, 14107590, 28215180]

約数ペア:

[(1, 28215180), (2, 14107590), (3, 9405060), (4, 7053795), (5, 5643036), (6, 4702530), (7, 4030740), (9, 3135020), (10, 2821518), (12, 2351265), (14, 2015370), (15, 1881012), (18, 1567510), (20, 1410759), (21, 1343580), (28, 1007685), (30, 940506), (35, 806148), (36, 783755), (42, 671790), (45, 627004), (49, 575820), (60, 470253), (63, 447860), (70, 403074), (84, 335895), (90, 313502), (98, 287910), (105, 268716), (126, 223930), (140, 201537), (147, 191940), (180, 156751), (196, 143955), (210, 134358), (245, 115164), (252, 111965), (294, 95970), (315, 89572), (343, 82260), (420, 67179), (441, 63980), (457, 61740), (490, 57582), (588, 47985), (630, 44786), (686, 41130), (735, 38388), (882, 31990), (914, 30870), (980, 28791), (1029, 27420), (1260, 22393), (1371, 20580), (1372, 20565), (1470, 19194), (1715, 16452), (1764, 15995), (1828, 15435), (2058, 13710), (2205, 12796), (2285, 12348), (2742, 10290), (2940, 9597), (3087, 9140), (3199, 8820), (3430, 8226), (4113, 6860), (4116, 6855), (4410, 6398), (4570, 6174), (5145, 5484)]