81384680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2953}}^1$

素因数の和:3030

約数の個数: 64

約数和(自身を含む): 200990160

約数和(自身を除く): 119605480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 53, 65, 104, 106, 130, 212, 260, 265, 424, 520, 530, 689, 1060, 1378, 2120, 2756, 2953, 3445, 5512, 5906, 6890, 11812, 13780, 14765, 23624, 27560, 29530, 38389, 59060, 76778, 118120, 153556, 156509, 191945, 307112, 313018, 383890, 626036, 767780, 782545, 1252072, 1535560, 1565090, 2034617, 3130180, 4069234, 6260360, 8138468, 10173085, 16276936, 20346170, 40692340, 81384680]

約数ペア:

[(1, 81384680), (2, 40692340), (4, 20346170), (5, 16276936), (8, 10173085), (10, 8138468), (13, 6260360), (20, 4069234), (26, 3130180), (40, 2034617), (52, 1565090), (53, 1535560), (65, 1252072), (104, 782545), (106, 767780), (130, 626036), (212, 383890), (260, 313018), (265, 307112), (424, 191945), (520, 156509), (530, 153556), (689, 118120), (1060, 76778), (1378, 59060), (2120, 38389), (2756, 29530), (2953, 27560), (3445, 23624), (5512, 14765), (5906, 13780), (6890, 11812)]