20648016

素因数分解:

$2^4\times 3^2\times {\mathrm{223}}^1\times {\mathrm{643}}^1$

素因数の和:880

約数の個数: 60

約数和(自身を含む): 58135168

約数和(自身を除く): 37487152

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 223, 446, 643, 669, 892, 1286, 1338, 1784, 1929, 2007, 2572, 2676, 3568, 3858, 4014, 5144, 5352, 5787, 7716, 8028, 10288, 10704, 11574, 15432, 16056, 23148, 30864, 32112, 46296, 92592, 143389, 286778, 430167, 573556, 860334, 1147112, 1290501, 1720668, 2294224, 2581002, 3441336, 5162004, 6882672, 10324008, 20648016]

約数ペア:

[(1, 20648016), (2, 10324008), (3, 6882672), (4, 5162004), (6, 3441336), (8, 2581002), (9, 2294224), (12, 1720668), (16, 1290501), (18, 1147112), (24, 860334), (36, 573556), (48, 430167), (72, 286778), (144, 143389), (223, 92592), (446, 46296), (643, 32112), (669, 30864), (892, 23148), (1286, 16056), (1338, 15432), (1784, 11574), (1929, 10704), (2007, 10288), (2572, 8028), (2676, 7716), (3568, 5787), (3858, 5352), (4014, 5144)]