78888520

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{6301}}^1$

素因数の和:6625

約数の個数: 32

約数和(自身を含む): 178094520

約数和(自身を除く): 99206000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2504, 3130, 6260, 6301, 12520, 12602, 25204, 31505, 50408, 63010, 126020, 252040, 1972213, 3944426, 7888852, 9861065, 15777704, 19722130, 39444260, 78888520]

約数ペア:

[(1, 78888520), (2, 39444260), (4, 19722130), (5, 15777704), (8, 9861065), (10, 7888852), (20, 3944426), (40, 1972213), (313, 252040), (626, 126020), (1252, 63010), (1565, 50408), (2504, 31505), (3130, 25204), (6260, 12602), (6301, 12520)]