21983705

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1\times {\mathrm{479}}^1$

素因数の和:688

約数の個数: 16

約数和(自身を含む): 27025920

約数和(自身を除く): 5042215

約数列:

[1, 5, 67, 137, 335, 479, 685, 2395, 9179, 32093, 45895, 65623, 160465, 328115, 4396741, 21983705]

約数ペア:

[(1, 21983705), (5, 4396741), (67, 328115), (137, 160465), (335, 65623), (479, 45895), (685, 32093), (2395, 9179)]