217605320

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{39709}}^1$

素因数の和:39857

約数の個数: 32

約数和(自身を含む): 493198200

約数和(自身を除く): 275592880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 39709, 79418, 158836, 198545, 317672, 397090, 794180, 1588360, 5440133, 10880266, 21760532, 27200665, 43521064, 54401330, 108802660, 217605320]

約数ペア:

[(1, 217605320), (2, 108802660), (4, 54401330), (5, 43521064), (8, 27200665), (10, 21760532), (20, 10880266), (40, 5440133), (137, 1588360), (274, 794180), (548, 397090), (685, 317672), (1096, 198545), (1370, 158836), (2740, 79418), (5480, 39709)]