18709678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{167}}^1$

素因数の和:352

約数の個数: 32

約数和(自身を含む): 31610880

約数和(自身を除く): 12901202

約数列:

[1, 2, 13, 26, 31, 62, 139, 167, 278, 334, 403, 806, 1807, 2171, 3614, 4309, 4342, 5177, 8618, 10354, 23213, 46426, 56017, 67301, 112034, 134602, 301769, 603538, 719603, 1439206, 9354839, 18709678]

約数ペア:

[(1, 18709678), (2, 9354839), (13, 1439206), (26, 719603), (31, 603538), (62, 301769), (139, 134602), (167, 112034), (278, 67301), (334, 56017), (403, 46426), (806, 23213), (1807, 10354), (2171, 8618), (3614, 5177), (4309, 4342)]