21288072

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 96

約数和(自身を含む): 60056640

約数和(自身を除く): 38768568

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 31, 39, 52, 62, 71, 78, 93, 104, 124, 142, 156, 186, 213, 248, 284, 312, 372, 403, 426, 568, 744, 806, 852, 923, 961, 1209, 1612, 1704, 1846, 1922, 2201, 2418, 2769, 2883, 3224, 3692, 3844, 4402, 4836, 5538, 5766, 6603, 7384, 7688, 8804, 9672, 11076, 11532, 12493, 13206, 17608, 22152, 23064, 24986, 26412, 28613, 37479, 49972, 52824, 57226, 68231, 74958, 85839, 99944, 114452, 136462, 149916, 171678, 204693, 228904, 272924, 299832, 343356, 409386, 545848, 686712, 818772, 887003, 1637544, 1774006, 2661009, 3548012, 5322018, 7096024, 10644036, 21288072]

約数ペア:

[(1, 21288072), (2, 10644036), (3, 7096024), (4, 5322018), (6, 3548012), (8, 2661009), (12, 1774006), (13, 1637544), (24, 887003), (26, 818772), (31, 686712), (39, 545848), (52, 409386), (62, 343356), (71, 299832), (78, 272924), (93, 228904), (104, 204693), (124, 171678), (142, 149916), (156, 136462), (186, 114452), (213, 99944), (248, 85839), (284, 74958), (312, 68231), (372, 57226), (403, 52824), (426, 49972), (568, 37479), (744, 28613), (806, 26412), (852, 24986), (923, 23064), (961, 22152), (1209, 17608), (1612, 13206), (1704, 12493), (1846, 11532), (1922, 11076), (2201, 9672), (2418, 8804), (2769, 7688), (2883, 7384), (3224, 6603), (3692, 5766), (3844, 5538), (4402, 4836)]