78865240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{63601}}^1$

素因数の和:63643

約数の個数: 32

約数和(自身を含む): 183173760

約数和(自身を除く): 104308520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 63601, 127202, 254404, 318005, 508808, 636010, 1272020, 1971631, 2544040, 3943262, 7886524, 9858155, 15773048, 19716310, 39432620, 78865240]

約数ペア:

[(1, 78865240), (2, 39432620), (4, 19716310), (5, 15773048), (8, 9858155), (10, 7886524), (20, 3943262), (31, 2544040), (40, 1971631), (62, 1272020), (124, 636010), (155, 508808), (248, 318005), (310, 254404), (620, 127202), (1240, 63601)]