20355720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2203}}^1$

素因数の和:2235

約数の個数: 128

約数和(自身を含む): 76170240

約数和(自身を除く): 55814520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 77, 84, 88, 105, 110, 120, 132, 140, 154, 165, 168, 210, 220, 231, 264, 280, 308, 330, 385, 420, 440, 462, 616, 660, 770, 840, 924, 1155, 1320, 1540, 1848, 2203, 2310, 3080, 4406, 4620, 6609, 8812, 9240, 11015, 13218, 15421, 17624, 22030, 24233, 26436, 30842, 33045, 44060, 46263, 48466, 52872, 61684, 66090, 72699, 77105, 88120, 92526, 96932, 121165, 123368, 132180, 145398, 154210, 169631, 185052, 193864, 231315, 242330, 264360, 290796, 308420, 339262, 363495, 370104, 462630, 484660, 508893, 581592, 616840, 678524, 726990, 848155, 925260, 969320, 1017786, 1357048, 1453980, 1696310, 1850520, 2035572, 2544465, 2907960, 3392620, 4071144, 5088930, 6785240, 10177860, 20355720]

約数ペア:

[(1, 20355720), (2, 10177860), (3, 6785240), (4, 5088930), (5, 4071144), (6, 3392620), (7, 2907960), (8, 2544465), (10, 2035572), (11, 1850520), (12, 1696310), (14, 1453980), (15, 1357048), (20, 1017786), (21, 969320), (22, 925260), (24, 848155), (28, 726990), (30, 678524), (33, 616840), (35, 581592), (40, 508893), (42, 484660), (44, 462630), (55, 370104), (56, 363495), (60, 339262), (66, 308420), (70, 290796), (77, 264360), (84, 242330), (88, 231315), (105, 193864), (110, 185052), (120, 169631), (132, 154210), (140, 145398), (154, 132180), (165, 123368), (168, 121165), (210, 96932), (220, 92526), (231, 88120), (264, 77105), (280, 72699), (308, 66090), (330, 61684), (385, 52872), (420, 48466), (440, 46263), (462, 44060), (616, 33045), (660, 30842), (770, 26436), (840, 24233), (924, 22030), (1155, 17624), (1320, 15421), (1540, 13218), (1848, 11015), (2203, 9240), (2310, 8812), (3080, 6609), (4406, 4620)]