20638288

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{787}}^1$

素因数の和:955

約数の個数: 40

約数和(自身を含む): 43970400

約数和(自身を除く): 23332112

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 149, 176, 298, 596, 787, 1192, 1574, 1639, 2384, 3148, 3278, 6296, 6556, 8657, 12592, 13112, 17314, 26224, 34628, 69256, 117263, 138512, 234526, 469052, 938104, 1289893, 1876208, 2579786, 5159572, 10319144, 20638288]

約数ペア:

[(1, 20638288), (2, 10319144), (4, 5159572), (8, 2579786), (11, 1876208), (16, 1289893), (22, 938104), (44, 469052), (88, 234526), (149, 138512), (176, 117263), (298, 69256), (596, 34628), (787, 26224), (1192, 17314), (1574, 13112), (1639, 12592), (2384, 8657), (3148, 6556), (3278, 6296)]