18211970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{260171}}^1$

素因数の和:260185

約数の個数: 16

約数和(自身を含む): 37464768

約数和(自身を除く): 19252798

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 260171, 520342, 1300855, 1821197, 2601710, 3642394, 9105985, 18211970]

約数ペア:

[(1, 18211970), (2, 9105985), (5, 3642394), (7, 2601710), (10, 1821197), (14, 1300855), (35, 520342), (70, 260171)]