20389600

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1$

素因数の和:369

約数の個数: 144

約数和(自身を含む): 62246016

約数和(自身を除く): 41856416

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 25, 28, 32, 35, 40, 44, 50, 55, 56, 70, 77, 80, 88, 100, 110, 112, 140, 154, 160, 175, 176, 200, 220, 224, 275, 280, 308, 331, 350, 352, 385, 400, 440, 550, 560, 616, 662, 700, 770, 800, 880, 1100, 1120, 1232, 1324, 1400, 1540, 1655, 1760, 1925, 2200, 2317, 2464, 2648, 2800, 3080, 3310, 3641, 3850, 4400, 4634, 5296, 5600, 6160, 6620, 7282, 7700, 8275, 8800, 9268, 10592, 11585, 12320, 13240, 14564, 15400, 16550, 18205, 18536, 23170, 25487, 26480, 29128, 30800, 33100, 36410, 37072, 46340, 50974, 52960, 57925, 58256, 61600, 66200, 72820, 74144, 91025, 92680, 101948, 115850, 116512, 127435, 132400, 145640, 182050, 185360, 203896, 231700, 254870, 264800, 291280, 364100, 370720, 407792, 463400, 509740, 582560, 637175, 728200, 815584, 926800, 1019480, 1274350, 1456400, 1853600, 2038960, 2548700, 2912800, 4077920, 5097400, 10194800, 20389600]

約数ペア:

[(1, 20389600), (2, 10194800), (4, 5097400), (5, 4077920), (7, 2912800), (8, 2548700), (10, 2038960), (11, 1853600), (14, 1456400), (16, 1274350), (20, 1019480), (22, 926800), (25, 815584), (28, 728200), (32, 637175), (35, 582560), (40, 509740), (44, 463400), (50, 407792), (55, 370720), (56, 364100), (70, 291280), (77, 264800), (80, 254870), (88, 231700), (100, 203896), (110, 185360), (112, 182050), (140, 145640), (154, 132400), (160, 127435), (175, 116512), (176, 115850), (200, 101948), (220, 92680), (224, 91025), (275, 74144), (280, 72820), (308, 66200), (331, 61600), (350, 58256), (352, 57925), (385, 52960), (400, 50974), (440, 46340), (550, 37072), (560, 36410), (616, 33100), (662, 30800), (700, 29128), (770, 26480), (800, 25487), (880, 23170), (1100, 18536), (1120, 18205), (1232, 16550), (1324, 15400), (1400, 14564), (1540, 13240), (1655, 12320), (1760, 11585), (1925, 10592), (2200, 9268), (2317, 8800), (2464, 8275), (2648, 7700), (2800, 7282), (3080, 6620), (3310, 6160), (3641, 5600), (3850, 5296), (4400, 4634)]