20649475

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{631}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 33854976

約数和(自身を除く): 13205501

約数列:

[1, 5, 7, 11, 17, 25, 35, 55, 77, 85, 119, 175, 187, 275, 385, 425, 595, 631, 935, 1309, 1925, 2975, 3155, 4417, 4675, 6545, 6941, 10727, 15775, 22085, 32725, 34705, 48587, 53635, 75089, 110425, 117997, 173525, 242935, 268175, 375445, 589985, 825979, 1214675, 1877225, 2949925, 4129895, 20649475]

約数ペア:

[(1, 20649475), (5, 4129895), (7, 2949925), (11, 1877225), (17, 1214675), (25, 825979), (35, 589985), (55, 375445), (77, 268175), (85, 242935), (119, 173525), (175, 117997), (187, 110425), (275, 75089), (385, 53635), (425, 48587), (595, 34705), (631, 32725), (935, 22085), (1309, 15775), (1925, 10727), (2975, 6941), (3155, 6545), (4417, 4675)]