81478384

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1$

素因数の和:482

約数の個数: 80

約数和(自身を含む): 182800800

約数和(自身を除く): 101322416

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 53, 76, 104, 106, 152, 208, 212, 247, 304, 389, 424, 494, 689, 778, 848, 988, 1007, 1378, 1556, 1976, 2014, 2756, 3112, 3952, 4028, 5057, 5512, 6224, 7391, 8056, 10114, 11024, 13091, 14782, 16112, 20228, 20617, 26182, 29564, 40456, 41234, 52364, 59128, 80912, 82468, 96083, 104728, 118256, 164936, 192166, 209456, 268021, 329872, 384332, 391723, 536042, 768664, 783446, 1072084, 1537328, 1566892, 2144168, 3133784, 4288336, 5092399, 6267568, 10184798, 20369596, 40739192, 81478384]

約数ペア:

[(1, 81478384), (2, 40739192), (4, 20369596), (8, 10184798), (13, 6267568), (16, 5092399), (19, 4288336), (26, 3133784), (38, 2144168), (52, 1566892), (53, 1537328), (76, 1072084), (104, 783446), (106, 768664), (152, 536042), (208, 391723), (212, 384332), (247, 329872), (304, 268021), (389, 209456), (424, 192166), (494, 164936), (689, 118256), (778, 104728), (848, 96083), (988, 82468), (1007, 80912), (1378, 59128), (1556, 52364), (1976, 41234), (2014, 40456), (2756, 29564), (3112, 26182), (3952, 20617), (4028, 20228), (5057, 16112), (5512, 14782), (6224, 13091), (7391, 11024), (8056, 10114)]