80741680

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{4021}}^1$

素因数の和:4285

約数の個数: 40

約数和(自身を含む): 188519184

約数和(自身を除く): 107777504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1255, 2008, 2510, 4016, 4021, 5020, 8042, 10040, 16084, 20080, 20105, 32168, 40210, 64336, 80420, 160840, 321680, 1009271, 2018542, 4037084, 5046355, 8074168, 10092710, 16148336, 20185420, 40370840, 80741680]

約数ペア:

[(1, 80741680), (2, 40370840), (4, 20185420), (5, 16148336), (8, 10092710), (10, 8074168), (16, 5046355), (20, 4037084), (40, 2018542), (80, 1009271), (251, 321680), (502, 160840), (1004, 80420), (1255, 64336), (2008, 40210), (2510, 32168), (4016, 20105), (4021, 20080), (5020, 16084), (8042, 10040)]