205440488

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:470

約数の個数: 64

約数和(自身を含む): 431101440

約数和(自身を除く): 225660952

約数列:

[1, 2, 4, 8, 11, 22, 44, 71, 88, 131, 142, 251, 262, 284, 502, 524, 568, 781, 1004, 1048, 1441, 1562, 2008, 2761, 2882, 3124, 5522, 5764, 6248, 9301, 11044, 11528, 17821, 18602, 22088, 32881, 35642, 37204, 65762, 71284, 74408, 102311, 131524, 142568, 196031, 204622, 263048, 361691, 392062, 409244, 723382, 784124, 818488, 1446764, 1568248, 2334551, 2893528, 4669102, 9338204, 18676408, 25680061, 51360122, 102720244, 205440488]

約数ペア:

[(1, 205440488), (2, 102720244), (4, 51360122), (8, 25680061), (11, 18676408), (22, 9338204), (44, 4669102), (71, 2893528), (88, 2334551), (131, 1568248), (142, 1446764), (251, 818488), (262, 784124), (284, 723382), (502, 409244), (524, 392062), (568, 361691), (781, 263048), (1004, 204622), (1048, 196031), (1441, 142568), (1562, 131524), (2008, 102311), (2761, 74408), (2882, 71284), (3124, 65762), (5522, 37204), (5764, 35642), (6248, 32881), (9301, 22088), (11044, 18602), (11528, 17821)]