81998964

素因数分解:

$2^2\times 3^2\times {\mathrm{491}}^1\times {\mathrm{4639}}^1$

素因数の和:5140

約数の個数: 36

約数和(自身を含む): 207742080

約数和(自身を除く): 125743116

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 491, 982, 1473, 1964, 2946, 4419, 4639, 5892, 8838, 9278, 13917, 17676, 18556, 27834, 41751, 55668, 83502, 167004, 2277749, 4555498, 6833247, 9110996, 13666494, 20499741, 27332988, 40999482, 81998964]

約数ペア:

[(1, 81998964), (2, 40999482), (3, 27332988), (4, 20499741), (6, 13666494), (9, 9110996), (12, 6833247), (18, 4555498), (36, 2277749), (491, 167004), (982, 83502), (1473, 55668), (1964, 41751), (2946, 27834), (4419, 18556), (4639, 17676), (5892, 13917), (8838, 9278)]