25155988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{199}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 55339200

約数和(自身を除く): 30183212

約数列:

[1, 2, 4, 11, 13, 17, 22, 26, 34, 44, 52, 68, 143, 169, 187, 199, 221, 286, 338, 374, 398, 442, 572, 676, 748, 796, 884, 1859, 2189, 2431, 2587, 2873, 3383, 3718, 4378, 4862, 5174, 5746, 6766, 7436, 8756, 9724, 10348, 11492, 13532, 28457, 31603, 33631, 37213, 43979, 56914, 63206, 67262, 74426, 87958, 113828, 126412, 134524, 148852, 175916, 369941, 483769, 571727, 739882, 967538, 1143454, 1479764, 1935076, 2286908, 6288997, 12577994, 25155988]

約数ペア:

[(1, 25155988), (2, 12577994), (4, 6288997), (11, 2286908), (13, 1935076), (17, 1479764), (22, 1143454), (26, 967538), (34, 739882), (44, 571727), (52, 483769), (68, 369941), (143, 175916), (169, 148852), (187, 134524), (199, 126412), (221, 113828), (286, 87958), (338, 74426), (374, 67262), (398, 63206), (442, 56914), (572, 43979), (676, 37213), (748, 33631), (796, 31603), (884, 28457), (1859, 13532), (2189, 11492), (2431, 10348), (2587, 9724), (2873, 8756), (3383, 7436), (3718, 6766), (4378, 5746), (4862, 5174)]