81991652

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 153538560

約数和(自身を除く): 71546908

約数列:

[1, 2, 4, 31, 62, 67, 71, 124, 134, 139, 142, 268, 278, 284, 556, 2077, 2201, 4154, 4309, 4402, 4757, 8308, 8618, 8804, 9313, 9514, 9869, 17236, 18626, 19028, 19738, 37252, 39476, 147467, 288703, 294934, 305939, 577406, 589868, 611878, 661223, 1154812, 1223756, 1322446, 2644892, 20497913, 40995826, 81991652]

約数ペア:

[(1, 81991652), (2, 40995826), (4, 20497913), (31, 2644892), (62, 1322446), (67, 1223756), (71, 1154812), (124, 661223), (134, 611878), (139, 589868), (142, 577406), (268, 305939), (278, 294934), (284, 288703), (556, 147467), (2077, 39476), (2201, 37252), (4154, 19738), (4309, 19028), (4402, 18626), (4757, 17236), (8308, 9869), (8618, 9514), (8804, 9313)]