21338625

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{739}}^1$

素因数の和:775

約数の個数: 64

約数和(自身を含む): 44328960

約数和(自身を除く): 22990335

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 55, 75, 77, 105, 125, 165, 175, 231, 275, 375, 385, 525, 739, 825, 875, 1155, 1375, 1925, 2217, 2625, 3695, 4125, 5173, 5775, 8129, 9625, 11085, 15519, 18475, 24387, 25865, 28875, 40645, 55425, 56903, 77595, 92375, 121935, 129325, 170709, 203225, 277125, 284515, 387975, 609675, 646625, 853545, 1016125, 1422575, 1939875, 3048375, 4267725, 7112875, 21338625]

約数ペア:

[(1, 21338625), (3, 7112875), (5, 4267725), (7, 3048375), (11, 1939875), (15, 1422575), (21, 1016125), (25, 853545), (33, 646625), (35, 609675), (55, 387975), (75, 284515), (77, 277125), (105, 203225), (125, 170709), (165, 129325), (175, 121935), (231, 92375), (275, 77595), (375, 56903), (385, 55425), (525, 40645), (739, 28875), (825, 25865), (875, 24387), (1155, 18475), (1375, 15519), (1925, 11085), (2217, 9625), (2625, 8129), (3695, 5775), (4125, 5173)]