66986020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{431}}^1$

素因数の和:868

約数の個数: 48

約数和(自身を含む): 148780800

約数和(自身を除く): 81794780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 409, 431, 818, 862, 1636, 1724, 2045, 2155, 4090, 4310, 7771, 8180, 8189, 8620, 15542, 16378, 31084, 32756, 38855, 40945, 77710, 81890, 155420, 163780, 176279, 352558, 705116, 881395, 1762790, 3349301, 3525580, 6698602, 13397204, 16746505, 33493010, 66986020]

約数ペア:

[(1, 66986020), (2, 33493010), (4, 16746505), (5, 13397204), (10, 6698602), (19, 3525580), (20, 3349301), (38, 1762790), (76, 881395), (95, 705116), (190, 352558), (380, 176279), (409, 163780), (431, 155420), (818, 81890), (862, 77710), (1636, 40945), (1724, 38855), (2045, 32756), (2155, 31084), (4090, 16378), (4310, 15542), (7771, 8620), (8180, 8189)]