257819212

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{151}}^1\times {\mathrm{211}}^1$

素因数の和:407

約数の個数: 72

約数和(自身を含む): 553995008

約数和(自身を除く): 296175796

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 151, 211, 238, 289, 302, 422, 476, 578, 604, 844, 1057, 1156, 1477, 2023, 2114, 2567, 2954, 3587, 4046, 4228, 5134, 5908, 7174, 8092, 10268, 14348, 17969, 25109, 31861, 35938, 43639, 50218, 60979, 63722, 71876, 87278, 100436, 121958, 127444, 174556, 223027, 243916, 305473, 426853, 446054, 541637, 610946, 853706, 892108, 1083274, 1221892, 1707412, 2166548, 3791459, 7582918, 9207829, 15165836, 18415658, 36831316, 64454803, 128909606, 257819212]

約数ペア:

[(1, 257819212), (2, 128909606), (4, 64454803), (7, 36831316), (14, 18415658), (17, 15165836), (28, 9207829), (34, 7582918), (68, 3791459), (119, 2166548), (151, 1707412), (211, 1221892), (238, 1083274), (289, 892108), (302, 853706), (422, 610946), (476, 541637), (578, 446054), (604, 426853), (844, 305473), (1057, 243916), (1156, 223027), (1477, 174556), (2023, 127444), (2114, 121958), (2567, 100436), (2954, 87278), (3587, 71876), (4046, 63722), (4228, 60979), (5134, 50218), (5908, 43639), (7174, 35938), (8092, 31861), (10268, 25109), (14348, 17969)]