641231280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{28729}}^1$

素因数の和:28779

約数の個数: 120

約数和(自身を含む): 2223012480

約数和(自身を除く): 1581781200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 120, 124, 144, 155, 180, 186, 240, 248, 279, 310, 360, 372, 465, 496, 558, 620, 720, 744, 930, 1116, 1240, 1395, 1488, 1860, 2232, 2480, 2790, 3720, 4464, 5580, 7440, 11160, 22320, 28729, 57458, 86187, 114916, 143645, 172374, 229832, 258561, 287290, 344748, 430935, 459664, 517122, 574580, 689496, 861870, 890599, 1034244, 1149160, 1292805, 1378992, 1723740, 1781198, 2068488, 2298320, 2585610, 2671797, 3447480, 3562396, 4136976, 4452995, 5171220, 5343594, 6894960, 7124792, 8015391, 8905990, 10342440, 10687188, 13358985, 14249584, 16030782, 17811980, 20684880, 21374376, 26717970, 32061564, 35623960, 40076955, 42748752, 53435940, 64123128, 71247920, 80153910, 106871880, 128246256, 160307820, 213743760, 320615640, 641231280]

約数ペア:

[(1, 641231280), (2, 320615640), (3, 213743760), (4, 160307820), (5, 128246256), (6, 106871880), (8, 80153910), (9, 71247920), (10, 64123128), (12, 53435940), (15, 42748752), (16, 40076955), (18, 35623960), (20, 32061564), (24, 26717970), (30, 21374376), (31, 20684880), (36, 17811980), (40, 16030782), (45, 14249584), (48, 13358985), (60, 10687188), (62, 10342440), (72, 8905990), (80, 8015391), (90, 7124792), (93, 6894960), (120, 5343594), (124, 5171220), (144, 4452995), (155, 4136976), (180, 3562396), (186, 3447480), (240, 2671797), (248, 2585610), (279, 2298320), (310, 2068488), (360, 1781198), (372, 1723740), (465, 1378992), (496, 1292805), (558, 1149160), (620, 1034244), (720, 890599), (744, 861870), (930, 689496), (1116, 574580), (1240, 517122), (1395, 459664), (1488, 430935), (1860, 344748), (2232, 287290), (2480, 258561), (2790, 229832), (3720, 172374), (4464, 143645), (5580, 114916), (7440, 86187), (11160, 57458), (22320, 28729)]