19978406080

素因数分解:

$2^6\times 5^1\times {\mathrm{4691}}^1\times {\mathrm{13309}}^1$

素因数の和:18017

約数の個数: 56

約数和(自身を含む): 47587296240

約数和(自身を除く): 27608890160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 4691, 9382, 13309, 18764, 23455, 26618, 37528, 46910, 53236, 66545, 75056, 93820, 106472, 133090, 150112, 187640, 212944, 266180, 300224, 375280, 425888, 532360, 750560, 851776, 1064720, 1501120, 2129440, 4258880, 62432519, 124865038, 249730076, 312162595, 499460152, 624325190, 998920304, 1248650380, 1997840608, 2497300760, 3995681216, 4994601520, 9989203040, 19978406080]

約数ペア:

[(1, 19978406080), (2, 9989203040), (4, 4994601520), (5, 3995681216), (8, 2497300760), (10, 1997840608), (16, 1248650380), (20, 998920304), (32, 624325190), (40, 499460152), (64, 312162595), (80, 249730076), (160, 124865038), (320, 62432519), (4691, 4258880), (9382, 2129440), (13309, 1501120), (18764, 1064720), (23455, 851776), (26618, 750560), (37528, 532360), (46910, 425888), (53236, 375280), (66545, 300224), (75056, 266180), (93820, 212944), (106472, 187640), (133090, 150112)]