21137555840

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{367}}^1\times {\mathrm{2903}}^1$

素因数の和:3320

約数の個数: 128

約数和(自身を含む): 52322181120

約数和(自身を除く): 31184625280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 367, 496, 620, 640, 734, 992, 1240, 1468, 1835, 1984, 2480, 2903, 2936, 3670, 3968, 4960, 5806, 5872, 7340, 9920, 11377, 11612, 11744, 14515, 14680, 19840, 22754, 23224, 23488, 29030, 29360, 45508, 46448, 46976, 56885, 58060, 58720, 89993, 91016, 92896, 113770, 116120, 117440, 179986, 182032, 185792, 227540, 232240, 234880, 359972, 364064, 371584, 449965, 455080, 464480, 719944, 728128, 899930, 910160, 928960, 1065401, 1439888, 1456256, 1799860, 1820320, 1857920, 2130802, 2879776, 3599720, 3640640, 4261604, 5327005, 5759552, 7199440, 7281280, 8523208, 10654010, 11519104, 14398880, 17046416, 21308020, 28797760, 33027431, 34092832, 42616040, 57595520, 66054862, 68185664, 85232080, 132109724, 136371328, 165137155, 170464160, 264219448, 330274310, 340928320, 528438896, 660548620, 681856640, 1056877792, 1321097240, 2113755584, 2642194480, 4227511168, 5284388960, 10568777920, 21137555840]

約数ペア:

[(1, 21137555840), (2, 10568777920), (4, 5284388960), (5, 4227511168), (8, 2642194480), (10, 2113755584), (16, 1321097240), (20, 1056877792), (31, 681856640), (32, 660548620), (40, 528438896), (62, 340928320), (64, 330274310), (80, 264219448), (124, 170464160), (128, 165137155), (155, 136371328), (160, 132109724), (248, 85232080), (310, 68185664), (320, 66054862), (367, 57595520), (496, 42616040), (620, 34092832), (640, 33027431), (734, 28797760), (992, 21308020), (1240, 17046416), (1468, 14398880), (1835, 11519104), (1984, 10654010), (2480, 8523208), (2903, 7281280), (2936, 7199440), (3670, 5759552), (3968, 5327005), (4960, 4261604), (5806, 3640640), (5872, 3599720), (7340, 2879776), (9920, 2130802), (11377, 1857920), (11612, 1820320), (11744, 1799860), (14515, 1456256), (14680, 1439888), (19840, 1065401), (22754, 928960), (23224, 910160), (23488, 899930), (29030, 728128), (29360, 719944), (45508, 464480), (46448, 455080), (46976, 449965), (56885, 371584), (58060, 364064), (58720, 359972), (89993, 234880), (91016, 232240), (92896, 227540), (113770, 185792), (116120, 182032), (117440, 179986)]