278380370

素因数分解:

$2^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{70121}}^1$

素因数の和:70525

約数の個数: 16

約数和(自身を含む): 502354008

約数和(自身を除く): 223973638

約数列:

[1, 2, 5, 10, 397, 794, 1985, 3970, 70121, 140242, 350605, 701210, 27838037, 55676074, 139190185, 278380370]

約数ペア:

[(1, 278380370), (2, 139190185), (5, 55676074), (10, 27838037), (397, 701210), (794, 350605), (1985, 140242), (3970, 70121)]