261189136

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{40507}}^1$

素因数の和:40559

約数の個数: 40

約数和(自身を含む): 562575104

約数和(自身を除く): 301385968

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 40507, 81014, 162028, 324056, 526591, 648112, 1053182, 1255717, 2106364, 2511434, 4212728, 5022868, 8425456, 10045736, 16324321, 20091472, 32648642, 65297284, 130594568, 261189136]

約数ペア:

[(1, 261189136), (2, 130594568), (4, 65297284), (8, 32648642), (13, 20091472), (16, 16324321), (26, 10045736), (31, 8425456), (52, 5022868), (62, 4212728), (104, 2511434), (124, 2106364), (208, 1255717), (248, 1053182), (403, 648112), (496, 526591), (806, 324056), (1612, 162028), (3224, 81014), (6448, 40507)]