257534080

素因数分解:

$2^7\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1153}}^1$

素因数の和:1521

約数の個数: 64

約数和(自身を含む): 617967000

約数和(自身を除く): 360432920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 349, 640, 698, 1153, 1396, 1745, 2306, 2792, 3490, 4612, 5584, 5765, 6980, 9224, 11168, 11530, 13960, 18448, 22336, 23060, 27920, 36896, 44672, 46120, 55840, 73792, 92240, 111680, 147584, 184480, 223360, 368960, 402397, 737920, 804794, 1609588, 2011985, 3219176, 4023970, 6438352, 8047940, 12876704, 16095880, 25753408, 32191760, 51506816, 64383520, 128767040, 257534080]

約数ペア:

[(1, 257534080), (2, 128767040), (4, 64383520), (5, 51506816), (8, 32191760), (10, 25753408), (16, 16095880), (20, 12876704), (32, 8047940), (40, 6438352), (64, 4023970), (80, 3219176), (128, 2011985), (160, 1609588), (320, 804794), (349, 737920), (640, 402397), (698, 368960), (1153, 223360), (1396, 184480), (1745, 147584), (2306, 111680), (2792, 92240), (3490, 73792), (4612, 55840), (5584, 46120), (5765, 44672), (6980, 36896), (9224, 27920), (11168, 23060), (11530, 22336), (13960, 18448)]