138693820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{407923}}^1$

素因数の和:407949

約数の個数: 24

約数和(自身を含む): 308390544

約数和(自身を除く): 169696724

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 407923, 815846, 1631692, 2039615, 4079230, 6934691, 8158460, 13869382, 27738764, 34673455, 69346910, 138693820]

約数ペア:

[(1, 138693820), (2, 69346910), (4, 34673455), (5, 27738764), (10, 13869382), (17, 8158460), (20, 6934691), (34, 4079230), (68, 2039615), (85, 1631692), (170, 815846), (340, 407923)]