257639940

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{359}}^1\times {\mathrm{443}}^1$

素因数の和:823

約数の個数: 120

約数和(自身を含む): 812306880

約数和(自身を除く): 554666940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 359, 405, 443, 540, 718, 810, 886, 1077, 1329, 1436, 1620, 1772, 1795, 2154, 2215, 2658, 3231, 3590, 3987, 4308, 4430, 5316, 5385, 6462, 6645, 7180, 7974, 8860, 9693, 10770, 11961, 12924, 13290, 15948, 16155, 19386, 19935, 21540, 23922, 26580, 29079, 32310, 35883, 38772, 39870, 47844, 48465, 58158, 59805, 64620, 71766, 79740, 96930, 116316, 119610, 143532, 145395, 159037, 179415, 193860, 239220, 290790, 318074, 358830, 477111, 581580, 636148, 717660, 795185, 954222, 1431333, 1590370, 1908444, 2385555, 2862666, 3180740, 4293999, 4771110, 5725332, 7156665, 8587998, 9542220, 12881997, 14313330, 17175996, 21469995, 25763994, 28626660, 42939990, 51527988, 64409985, 85879980, 128819970, 257639940]

約数ペア:

[(1, 257639940), (2, 128819970), (3, 85879980), (4, 64409985), (5, 51527988), (6, 42939990), (9, 28626660), (10, 25763994), (12, 21469995), (15, 17175996), (18, 14313330), (20, 12881997), (27, 9542220), (30, 8587998), (36, 7156665), (45, 5725332), (54, 4771110), (60, 4293999), (81, 3180740), (90, 2862666), (108, 2385555), (135, 1908444), (162, 1590370), (180, 1431333), (270, 954222), (324, 795185), (359, 717660), (405, 636148), (443, 581580), (540, 477111), (718, 358830), (810, 318074), (886, 290790), (1077, 239220), (1329, 193860), (1436, 179415), (1620, 159037), (1772, 145395), (1795, 143532), (2154, 119610), (2215, 116316), (2658, 96930), (3231, 79740), (3590, 71766), (3987, 64620), (4308, 59805), (4430, 58158), (5316, 48465), (5385, 47844), (6462, 39870), (6645, 38772), (7180, 35883), (7974, 32310), (8860, 29079), (9693, 26580), (10770, 23922), (11961, 21540), (12924, 19935), (13290, 19386), (15948, 16155)]