20982816

素因数分解:

$2^5\times 3^2\times {\mathrm{41}}^1\times {\mathrm{1777}}^1$

素因数の和:1834

約数の個数: 72

約数和(自身を含む): 61159644

約数和(自身を除く): 40176828

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 41, 48, 72, 82, 96, 123, 144, 164, 246, 288, 328, 369, 492, 656, 738, 984, 1312, 1476, 1777, 1968, 2952, 3554, 3936, 5331, 5904, 7108, 10662, 11808, 14216, 15993, 21324, 28432, 31986, 42648, 56864, 63972, 72857, 85296, 127944, 145714, 170592, 218571, 255888, 291428, 437142, 511776, 582856, 655713, 874284, 1165712, 1311426, 1748568, 2331424, 2622852, 3497136, 5245704, 6994272, 10491408, 20982816]

約数ペア:

[(1, 20982816), (2, 10491408), (3, 6994272), (4, 5245704), (6, 3497136), (8, 2622852), (9, 2331424), (12, 1748568), (16, 1311426), (18, 1165712), (24, 874284), (32, 655713), (36, 582856), (41, 511776), (48, 437142), (72, 291428), (82, 255888), (96, 218571), (123, 170592), (144, 145714), (164, 127944), (246, 85296), (288, 72857), (328, 63972), (369, 56864), (492, 42648), (656, 31986), (738, 28432), (984, 21324), (1312, 15993), (1476, 14216), (1777, 11808), (1968, 10662), (2952, 7108), (3554, 5904), (3936, 5331)]