17985940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{18353}}^1$

素因数の和:18376

約数の個数: 36

約数和(自身を含む): 43939476

約数和(自身を除く): 25953536

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 18353, 36706, 73412, 91765, 128471, 183530, 256942, 367060, 513884, 642355, 899297, 1284710, 1798594, 2569420, 3597188, 4496485, 8992970, 17985940]

約数ペア:

[(1, 17985940), (2, 8992970), (4, 4496485), (5, 3597188), (7, 2569420), (10, 1798594), (14, 1284710), (20, 899297), (28, 642355), (35, 513884), (49, 367060), (70, 256942), (98, 183530), (140, 128471), (196, 91765), (245, 73412), (490, 36706), (980, 18353)]