78027880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{278671}}^1$

素因数の和:278689

約数の個数: 32

約数和(自身を含む): 200643840

約数和(自身を除く): 122615960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 278671, 557342, 1114684, 1393355, 1950697, 2229368, 2786710, 3901394, 5573420, 7802788, 9753485, 11146840, 15605576, 19506970, 39013940, 78027880]

約数ペア:

[(1, 78027880), (2, 39013940), (4, 19506970), (5, 15605576), (7, 11146840), (8, 9753485), (10, 7802788), (14, 5573420), (20, 3901394), (28, 2786710), (35, 2229368), (40, 1950697), (56, 1393355), (70, 1114684), (140, 557342), (280, 278671)]