18157640

素因数分解:

$2^3\times 5^1\times {\mathrm{373}}^1\times {\mathrm{1217}}^1$

素因数の和:1601

約数の個数: 32

約数和(自身を含む): 40997880

約数和(自身を除く): 22840240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 373, 746, 1217, 1492, 1865, 2434, 2984, 3730, 4868, 6085, 7460, 9736, 12170, 14920, 24340, 48680, 453941, 907882, 1815764, 2269705, 3631528, 4539410, 9078820, 18157640]

約数ペア:

[(1, 18157640), (2, 9078820), (4, 4539410), (5, 3631528), (8, 2269705), (10, 1815764), (20, 907882), (40, 453941), (373, 48680), (746, 24340), (1217, 14920), (1492, 12170), (1865, 9736), (2434, 7460), (2984, 6085), (3730, 4868)]