81989964

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1459}}^1$

素因数の和:1699

約数の個数: 72

約数和(自身を含む): 238085120

約数和(自身を除く): 156095156

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 223, 252, 446, 669, 892, 1338, 1459, 1561, 2007, 2676, 2918, 3122, 4014, 4377, 4683, 5836, 6244, 8028, 8754, 9366, 10213, 13131, 14049, 17508, 18732, 20426, 26262, 28098, 30639, 40852, 52524, 56196, 61278, 91917, 122556, 183834, 325357, 367668, 650714, 976071, 1301428, 1952142, 2277499, 2928213, 3904284, 4554998, 5856426, 6832497, 9109996, 11712852, 13664994, 20497491, 27329988, 40994982, 81989964]

約数ペア:

[(1, 81989964), (2, 40994982), (3, 27329988), (4, 20497491), (6, 13664994), (7, 11712852), (9, 9109996), (12, 6832497), (14, 5856426), (18, 4554998), (21, 3904284), (28, 2928213), (36, 2277499), (42, 1952142), (63, 1301428), (84, 976071), (126, 650714), (223, 367668), (252, 325357), (446, 183834), (669, 122556), (892, 91917), (1338, 61278), (1459, 56196), (1561, 52524), (2007, 40852), (2676, 30639), (2918, 28098), (3122, 26262), (4014, 20426), (4377, 18732), (4683, 17508), (5836, 14049), (6244, 13131), (8028, 10213), (8754, 9366)]