18778880765

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1\times {\mathrm{20947}}^1$

素因数の和:21221

約数の個数: 32

約数和(自身を含む): 24433747200

約数和(自身を除く): 5654866435

約数列:

[1, 5, 17, 53, 85, 199, 265, 901, 995, 3383, 4505, 10547, 16915, 20947, 52735, 104735, 179299, 356099, 896495, 1110191, 1780495, 4168453, 5550955, 18873247, 20842265, 70863701, 94366235, 220928009, 354318505, 1104640045, 3755776153, 18778880765]

約数ペア:

[(1, 18778880765), (5, 3755776153), (17, 1104640045), (53, 354318505), (85, 220928009), (199, 94366235), (265, 70863701), (901, 20842265), (995, 18873247), (3383, 5550955), (4505, 4168453), (10547, 1780495), (16915, 1110191), (20947, 896495), (52735, 356099), (104735, 179299)]