78817640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{661}}^1$

素因数の和:954

約数の個数: 64

約数和(自身を含む): 194469120

約数和(自身を除く): 115651480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 271, 440, 542, 661, 1084, 1322, 1355, 2168, 2644, 2710, 2981, 3305, 5288, 5420, 5962, 6610, 7271, 10840, 11924, 13220, 14542, 14905, 23848, 26440, 29084, 29810, 36355, 58168, 59620, 72710, 119240, 145420, 179131, 290840, 358262, 716524, 895655, 1433048, 1791310, 1970441, 3582620, 3940882, 7165240, 7881764, 9852205, 15763528, 19704410, 39408820, 78817640]

約数ペア:

[(1, 78817640), (2, 39408820), (4, 19704410), (5, 15763528), (8, 9852205), (10, 7881764), (11, 7165240), (20, 3940882), (22, 3582620), (40, 1970441), (44, 1791310), (55, 1433048), (88, 895655), (110, 716524), (220, 358262), (271, 290840), (440, 179131), (542, 145420), (661, 119240), (1084, 72710), (1322, 59620), (1355, 58168), (2168, 36355), (2644, 29810), (2710, 29084), (2981, 26440), (3305, 23848), (5288, 14905), (5420, 14542), (5962, 13220), (6610, 11924), (7271, 10840)]