128633600

素因数分解:

$2^8\times 5^2\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:326

約数の個数: 108

約数和(自身を含む): 323156400

約数和(自身を除く): 194522800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 101, 128, 160, 199, 200, 202, 256, 320, 398, 400, 404, 505, 640, 796, 800, 808, 995, 1010, 1280, 1592, 1600, 1616, 1990, 2020, 2525, 3184, 3200, 3232, 3980, 4040, 4975, 5050, 6368, 6400, 6464, 7960, 8080, 9950, 10100, 12736, 12928, 15920, 16160, 19900, 20099, 20200, 25472, 25856, 31840, 32320, 39800, 40198, 40400, 50944, 63680, 64640, 79600, 80396, 80800, 100495, 127360, 129280, 159200, 160792, 161600, 200990, 254720, 318400, 321584, 323200, 401980, 502475, 636800, 643168, 646400, 803960, 1004950, 1273600, 1286336, 1607920, 2009900, 2572672, 3215840, 4019800, 5145344, 6431680, 8039600, 12863360, 16079200, 25726720, 32158400, 64316800, 128633600]

約数ペア:

[(1, 128633600), (2, 64316800), (4, 32158400), (5, 25726720), (8, 16079200), (10, 12863360), (16, 8039600), (20, 6431680), (25, 5145344), (32, 4019800), (40, 3215840), (50, 2572672), (64, 2009900), (80, 1607920), (100, 1286336), (101, 1273600), (128, 1004950), (160, 803960), (199, 646400), (200, 643168), (202, 636800), (256, 502475), (320, 401980), (398, 323200), (400, 321584), (404, 318400), (505, 254720), (640, 200990), (796, 161600), (800, 160792), (808, 159200), (995, 129280), (1010, 127360), (1280, 100495), (1592, 80800), (1600, 80396), (1616, 79600), (1990, 64640), (2020, 63680), (2525, 50944), (3184, 40400), (3200, 40198), (3232, 39800), (3980, 32320), (4040, 31840), (4975, 25856), (5050, 25472), (6368, 20200), (6400, 20099), (6464, 19900), (7960, 16160), (8080, 15920), (9950, 12928), (10100, 12736)]