81145240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{827}}^1$

素因数の和:1072

約数の個数: 64

約数和(自身を含む): 200309760

約数和(自身を除く): 119164520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 223, 440, 446, 827, 892, 1115, 1654, 1784, 2230, 2453, 3308, 4135, 4460, 4906, 6616, 8270, 8920, 9097, 9812, 12265, 16540, 18194, 19624, 24530, 33080, 36388, 45485, 49060, 72776, 90970, 98120, 181940, 184421, 363880, 368842, 737684, 922105, 1475368, 1844210, 2028631, 3688420, 4057262, 7376840, 8114524, 10143155, 16229048, 20286310, 40572620, 81145240]

約数ペア:

[(1, 81145240), (2, 40572620), (4, 20286310), (5, 16229048), (8, 10143155), (10, 8114524), (11, 7376840), (20, 4057262), (22, 3688420), (40, 2028631), (44, 1844210), (55, 1475368), (88, 922105), (110, 737684), (220, 368842), (223, 363880), (440, 184421), (446, 181940), (827, 98120), (892, 90970), (1115, 72776), (1654, 49060), (1784, 45485), (2230, 36388), (2453, 33080), (3308, 24530), (4135, 19624), (4460, 18194), (4906, 16540), (6616, 12265), (8270, 9812), (8920, 9097)]