121362880

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{19961}}^1$

素因数の和:19997

約数の個数: 56

約数和(自身を含む): 304220880

約数和(自身を除く): 182858000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 6080, 19961, 39922, 79844, 99805, 159688, 199610, 319376, 379259, 399220, 638752, 758518, 798440, 1277504, 1517036, 1596880, 1896295, 3034072, 3193760, 3792590, 6068144, 6387520, 7585180, 12136288, 15170360, 24272576, 30340720, 60681440, 121362880]

約数ペア:

[(1, 121362880), (2, 60681440), (4, 30340720), (5, 24272576), (8, 15170360), (10, 12136288), (16, 7585180), (19, 6387520), (20, 6068144), (32, 3792590), (38, 3193760), (40, 3034072), (64, 1896295), (76, 1596880), (80, 1517036), (95, 1277504), (152, 798440), (160, 758518), (190, 638752), (304, 399220), (320, 379259), (380, 319376), (608, 199610), (760, 159688), (1216, 99805), (1520, 79844), (3040, 39922), (6080, 19961)]