201990513080

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1\times {\mathrm{490697}}^1$

素因数の和:491000

約数の個数: 64

約数和(自身を含む): 467419286880

約数和(自身を除く): 265428773800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 251, 328, 410, 502, 820, 1004, 1255, 1640, 2008, 2510, 5020, 10040, 10291, 20582, 41164, 51455, 82328, 102910, 205820, 411640, 490697, 981394, 1962788, 2453485, 3925576, 4906970, 9813940, 19627880, 20118577, 40237154, 80474308, 100592885, 123164947, 160948616, 201185770, 246329894, 402371540, 492659788, 615824735, 804743080, 985319576, 1231649470, 2463298940, 4926597880, 5049762827, 10099525654, 20199051308, 25248814135, 40398102616, 50497628270, 100995256540, 201990513080]

約数ペア:

[(1, 201990513080), (2, 100995256540), (4, 50497628270), (5, 40398102616), (8, 25248814135), (10, 20199051308), (20, 10099525654), (40, 5049762827), (41, 4926597880), (82, 2463298940), (164, 1231649470), (205, 985319576), (251, 804743080), (328, 615824735), (410, 492659788), (502, 402371540), (820, 246329894), (1004, 201185770), (1255, 160948616), (1640, 123164947), (2008, 100592885), (2510, 80474308), (5020, 40237154), (10040, 20118577), (10291, 19627880), (20582, 9813940), (41164, 4906970), (51455, 3925576), (82328, 2453485), (102910, 1962788), (205820, 981394), (411640, 490697)]