661783040

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^2\times {\mathrm{269}}^1$

素因数の和:354

約数の個数: 120

約数和(自身を含む): 1645659180

約数和(自身を除く): 983876140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 269, 310, 320, 496, 512, 538, 620, 640, 961, 992, 1076, 1240, 1280, 1345, 1922, 1984, 2152, 2480, 2560, 2690, 3844, 3968, 4304, 4805, 4960, 5380, 7688, 7936, 8339, 8608, 9610, 9920, 10760, 15376, 15872, 16678, 17216, 19220, 19840, 21520, 30752, 33356, 34432, 38440, 39680, 41695, 43040, 61504, 66712, 68864, 76880, 79360, 83390, 86080, 123008, 133424, 137728, 153760, 166780, 172160, 246016, 258509, 266848, 307520, 333560, 344320, 492032, 517018, 533696, 615040, 667120, 688640, 1034036, 1067392, 1230080, 1292545, 1334240, 2068072, 2134784, 2460160, 2585090, 2668480, 4136144, 4269568, 5170180, 5336960, 8272288, 10340360, 10673920, 16544576, 20680720, 21347840, 33089152, 41361440, 66178304, 82722880, 132356608, 165445760, 330891520, 661783040]

約数ペア:

[(1, 661783040), (2, 330891520), (4, 165445760), (5, 132356608), (8, 82722880), (10, 66178304), (16, 41361440), (20, 33089152), (31, 21347840), (32, 20680720), (40, 16544576), (62, 10673920), (64, 10340360), (80, 8272288), (124, 5336960), (128, 5170180), (155, 4269568), (160, 4136144), (248, 2668480), (256, 2585090), (269, 2460160), (310, 2134784), (320, 2068072), (496, 1334240), (512, 1292545), (538, 1230080), (620, 1067392), (640, 1034036), (961, 688640), (992, 667120), (1076, 615040), (1240, 533696), (1280, 517018), (1345, 492032), (1922, 344320), (1984, 333560), (2152, 307520), (2480, 266848), (2560, 258509), (2690, 246016), (3844, 172160), (3968, 166780), (4304, 153760), (4805, 137728), (4960, 133424), (5380, 123008), (7688, 86080), (7936, 83390), (8339, 79360), (8608, 76880), (9610, 68864), (9920, 66712), (10760, 61504), (15376, 43040), (15872, 41695), (16678, 39680), (17216, 38440), (19220, 34432), (19840, 33356), (21520, 30752)]