20821008

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{547}}^1$

素因数の和:632

約数の個数: 80

約数和(自身を含む): 58982336

約数和(自身を除く): 38161328

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 61, 78, 104, 122, 156, 183, 208, 244, 312, 366, 488, 547, 624, 732, 793, 976, 1094, 1464, 1586, 1641, 2188, 2379, 2928, 3172, 3282, 4376, 4758, 6344, 6564, 7111, 8752, 9516, 12688, 13128, 14222, 19032, 21333, 26256, 28444, 33367, 38064, 42666, 56888, 66734, 85332, 100101, 113776, 133468, 170664, 200202, 266936, 341328, 400404, 433771, 533872, 800808, 867542, 1301313, 1601616, 1735084, 2602626, 3470168, 5205252, 6940336, 10410504, 20821008]

約数ペア:

[(1, 20821008), (2, 10410504), (3, 6940336), (4, 5205252), (6, 3470168), (8, 2602626), (12, 1735084), (13, 1601616), (16, 1301313), (24, 867542), (26, 800808), (39, 533872), (48, 433771), (52, 400404), (61, 341328), (78, 266936), (104, 200202), (122, 170664), (156, 133468), (183, 113776), (208, 100101), (244, 85332), (312, 66734), (366, 56888), (488, 42666), (547, 38064), (624, 33367), (732, 28444), (793, 26256), (976, 21333), (1094, 19032), (1464, 14222), (1586, 13128), (1641, 12688), (2188, 9516), (2379, 8752), (2928, 7111), (3172, 6564), (3282, 6344), (4376, 4758)]