25431987

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{461}}^1$

素因数の和:579

約数の個数: 32

約数和(自身を含む): 40449024

約数和(自身を除く): 15017037

約数列:

[1, 3, 7, 21, 37, 71, 111, 213, 259, 461, 497, 777, 1383, 1491, 2627, 3227, 7881, 9681, 17057, 18389, 32731, 51171, 55167, 98193, 119399, 229117, 358197, 687351, 1211047, 3633141, 8477329, 25431987]

約数ペア:

[(1, 25431987), (3, 8477329), (7, 3633141), (21, 1211047), (37, 687351), (71, 358197), (111, 229117), (213, 119399), (259, 98193), (461, 55167), (497, 51171), (777, 32731), (1383, 18389), (1491, 17057), (2627, 9681), (3227, 7881)]