20013786

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{89}}^1$

素因数の和:172

約数の個数: 72

約数和(自身を含む): 48796020

約数和(自身を除く): 28782234

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 31, 39, 62, 78, 89, 93, 117, 178, 186, 234, 267, 279, 403, 534, 558, 801, 806, 961, 1157, 1209, 1602, 1922, 2314, 2418, 2759, 2883, 3471, 3627, 5518, 5766, 6942, 7254, 8277, 8649, 10413, 12493, 16554, 17298, 20826, 24831, 24986, 35867, 37479, 49662, 71734, 74958, 85529, 107601, 112437, 171058, 215202, 224874, 256587, 322803, 513174, 645606, 769761, 1111877, 1539522, 2223754, 3335631, 6671262, 10006893, 20013786]

約数ペア:

[(1, 20013786), (2, 10006893), (3, 6671262), (6, 3335631), (9, 2223754), (13, 1539522), (18, 1111877), (26, 769761), (31, 645606), (39, 513174), (62, 322803), (78, 256587), (89, 224874), (93, 215202), (117, 171058), (178, 112437), (186, 107601), (234, 85529), (267, 74958), (279, 71734), (403, 49662), (534, 37479), (558, 35867), (801, 24986), (806, 24831), (961, 20826), (1157, 17298), (1209, 16554), (1602, 12493), (1922, 10413), (2314, 8649), (2418, 8277), (2759, 7254), (2883, 6942), (3471, 5766), (3627, 5518)]