138220455940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{987288971}}^1$

素因数の和:987288987

約数の個数: 24

約数和(自身を含む): 331729094592

約数和(自身を除く): 193508638652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 987288971, 1974577942, 3949155884, 4936444855, 6911022797, 9872889710, 13822045594, 19745779420, 27644091188, 34555113985, 69110227970, 138220455940]

約数ペア:

[(1, 138220455940), (2, 69110227970), (4, 34555113985), (5, 27644091188), (7, 19745779420), (10, 13822045594), (14, 9872889710), (20, 6911022797), (28, 4936444855), (35, 3949155884), (70, 1974577942), (140, 987288971)]