25286989

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:194

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 7372211

約数列:

[1, 7, 13, 49, 53, 91, 107, 343, 371, 637, 689, 749, 1391, 2597, 4459, 4823, 5243, 5671, 9737, 18179, 33761, 36701, 39697, 68159, 73723, 236327, 277879, 477113, 516061, 1945153, 3612427, 25286989]

約数ペア:

[(1, 25286989), (7, 3612427), (13, 1945153), (49, 516061), (53, 477113), (91, 277879), (107, 236327), (343, 73723), (371, 68159), (637, 39697), (689, 36701), (749, 33761), (1391, 18179), (2597, 9737), (4459, 5671), (4823, 5243)]