268052005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 391910400

約数和(自身を除く): 123858395

約数列:

[1, 5, 13, 17, 23, 53, 65, 85, 115, 199, 221, 265, 299, 391, 689, 901, 995, 1105, 1219, 1495, 1955, 2587, 3383, 3445, 4505, 4577, 5083, 6095, 10547, 11713, 12935, 15847, 16915, 20723, 22885, 25415, 43979, 52735, 58565, 59501, 77809, 79235, 103615, 137111, 179299, 219895, 242581, 269399, 297505, 389045, 685555, 896495, 1011517, 1212905, 1346995, 2330887, 3153553, 4123877, 5057585, 11654435, 15767765, 20619385, 53610401, 268052005]

約数ペア:

[(1, 268052005), (5, 53610401), (13, 20619385), (17, 15767765), (23, 11654435), (53, 5057585), (65, 4123877), (85, 3153553), (115, 2330887), (199, 1346995), (221, 1212905), (265, 1011517), (299, 896495), (391, 685555), (689, 389045), (901, 297505), (995, 269399), (1105, 242581), (1219, 219895), (1495, 179299), (1955, 137111), (2587, 103615), (3383, 79235), (3445, 77809), (4505, 59501), (4577, 58565), (5083, 52735), (6095, 43979), (10547, 25415), (11713, 22885), (12935, 20723), (15847, 16915)]