81316912

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{64333}}^1$

素因数の和:64420

約数の個数: 20

約数和(自身を含む): 159548320

約数和(自身を除く): 78231408

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 64333, 128666, 257332, 514664, 1029328, 5082307, 10164614, 20329228, 40658456, 81316912]

約数ペア:

[(1, 81316912), (2, 40658456), (4, 20329228), (8, 10164614), (16, 5082307), (79, 1029328), (158, 514664), (316, 257332), (632, 128666), (1264, 64333)]