21719522560

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^2\times {\mathrm{17657}}^1$

素因数の和:17740

約数の個数: 108

約数和(自身を含む): 53760452004

約数和(自身を除く): 32040929444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 961, 992, 1240, 1280, 1922, 1984, 2480, 3844, 3968, 4805, 4960, 7688, 7936, 9610, 9920, 15376, 17657, 19220, 19840, 30752, 35314, 38440, 39680, 61504, 70628, 76880, 88285, 123008, 141256, 153760, 176570, 246016, 282512, 307520, 353140, 547367, 565024, 615040, 706280, 1094734, 1130048, 1230080, 1412560, 2189468, 2260096, 2736835, 2825120, 4378936, 4520192, 5473670, 5650240, 8757872, 10947340, 11300480, 16968377, 17515744, 21894680, 22600960, 33936754, 35031488, 43789360, 67873508, 70062976, 84841885, 87578720, 135747016, 140125952, 169683770, 175157440, 271494032, 339367540, 350314880, 542988064, 678735080, 700629760, 1085976128, 1357470160, 2171952256, 2714940320, 4343904512, 5429880640, 10859761280, 21719522560]

約数ペア:

[(1, 21719522560), (2, 10859761280), (4, 5429880640), (5, 4343904512), (8, 2714940320), (10, 2171952256), (16, 1357470160), (20, 1085976128), (31, 700629760), (32, 678735080), (40, 542988064), (62, 350314880), (64, 339367540), (80, 271494032), (124, 175157440), (128, 169683770), (155, 140125952), (160, 135747016), (248, 87578720), (256, 84841885), (310, 70062976), (320, 67873508), (496, 43789360), (620, 35031488), (640, 33936754), (961, 22600960), (992, 21894680), (1240, 17515744), (1280, 16968377), (1922, 11300480), (1984, 10947340), (2480, 8757872), (3844, 5650240), (3968, 5473670), (4805, 4520192), (4960, 4378936), (7688, 2825120), (7936, 2736835), (9610, 2260096), (9920, 2189468), (15376, 1412560), (17657, 1230080), (19220, 1130048), (19840, 1094734), (30752, 706280), (35314, 615040), (38440, 565024), (39680, 547367), (61504, 353140), (70628, 307520), (76880, 282512), (88285, 246016), (123008, 176570), (141256, 153760)]