16918825

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1$

素因数の和:103

約数の個数: 72

約数和(自身を含む): 28498176

約数和(自身を除く): 11579351

約数列:

[1, 5, 7, 11, 17, 25, 35, 47, 55, 77, 85, 119, 121, 175, 187, 235, 275, 329, 385, 425, 517, 595, 605, 799, 847, 935, 1175, 1309, 1645, 1925, 2057, 2585, 2975, 3025, 3619, 3995, 4235, 4675, 5593, 5687, 6545, 8225, 8789, 10285, 12925, 14399, 18095, 19975, 21175, 27965, 28435, 32725, 39809, 43945, 51425, 61523, 71995, 90475, 96679, 139825, 142175, 199045, 219725, 307615, 359975, 483395, 676753, 995225, 1538075, 2416975, 3383765, 16918825]

約数ペア:

[(1, 16918825), (5, 3383765), (7, 2416975), (11, 1538075), (17, 995225), (25, 676753), (35, 483395), (47, 359975), (55, 307615), (77, 219725), (85, 199045), (119, 142175), (121, 139825), (175, 96679), (187, 90475), (235, 71995), (275, 61523), (329, 51425), (385, 43945), (425, 39809), (517, 32725), (595, 28435), (605, 27965), (799, 21175), (847, 19975), (935, 18095), (1175, 14399), (1309, 12925), (1645, 10285), (1925, 8789), (2057, 8225), (2585, 6545), (2975, 5687), (3025, 5593), (3619, 4675), (3995, 4235)]