20997392

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^2$

素因数の和:168

約数の個数: 60

約数和(自身を含む): 46103820

約数和(自身を除く): 25106428

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 52, 58, 59, 104, 116, 118, 208, 232, 236, 377, 464, 472, 754, 767, 944, 1508, 1534, 1711, 3016, 3068, 3422, 3481, 6032, 6136, 6844, 6962, 12272, 13688, 13924, 22243, 27376, 27848, 44486, 45253, 55696, 88972, 90506, 100949, 177944, 181012, 201898, 355888, 362024, 403796, 724048, 807592, 1312337, 1615184, 2624674, 5249348, 10498696, 20997392]

約数ペア:

[(1, 20997392), (2, 10498696), (4, 5249348), (8, 2624674), (13, 1615184), (16, 1312337), (26, 807592), (29, 724048), (52, 403796), (58, 362024), (59, 355888), (104, 201898), (116, 181012), (118, 177944), (208, 100949), (232, 90506), (236, 88972), (377, 55696), (464, 45253), (472, 44486), (754, 27848), (767, 27376), (944, 22243), (1508, 13924), (1534, 13688), (1711, 12272), (3016, 6962), (3068, 6844), (3422, 6136), (3481, 6032)]