78745240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{281233}}^1$

素因数の和:281251

約数の個数: 32

約数和(自身を含む): 202488480

約数和(自身を除く): 123743240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 281233, 562466, 1124932, 1406165, 1968631, 2249864, 2812330, 3937262, 5624660, 7874524, 9843155, 11249320, 15749048, 19686310, 39372620, 78745240]

約数ペア:

[(1, 78745240), (2, 39372620), (4, 19686310), (5, 15749048), (7, 11249320), (8, 9843155), (10, 7874524), (14, 5624660), (20, 3937262), (28, 2812330), (35, 2249864), (40, 1968631), (56, 1406165), (70, 1124932), (140, 562466), (280, 281233)]