78156680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{279131}}^1$

素因数の和:279149

約数の個数: 32

約数和(自身を含む): 200975040

約数和(自身を除く): 122818360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 279131, 558262, 1116524, 1395655, 1953917, 2233048, 2791310, 3907834, 5582620, 7815668, 9769585, 11165240, 15631336, 19539170, 39078340, 78156680]

約数ペア:

[(1, 78156680), (2, 39078340), (4, 19539170), (5, 15631336), (7, 11165240), (8, 9769585), (10, 7815668), (14, 5582620), (20, 3907834), (28, 2791310), (35, 2233048), (40, 1953917), (56, 1395655), (70, 1116524), (140, 558262), (280, 279131)]