21509172

素因数分解:

$2^2\times 3^3\times {\mathrm{79}}^1\times {\mathrm{2521}}^1$

素因数の和:2613

約数の個数: 48

約数和(自身を含む): 56492800

約数和(自身を除く): 34983628

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 79, 108, 158, 237, 316, 474, 711, 948, 1422, 2133, 2521, 2844, 4266, 5042, 7563, 8532, 10084, 15126, 22689, 30252, 45378, 68067, 90756, 136134, 199159, 272268, 398318, 597477, 796636, 1194954, 1792431, 2389908, 3584862, 5377293, 7169724, 10754586, 21509172]

約数ペア:

[(1, 21509172), (2, 10754586), (3, 7169724), (4, 5377293), (6, 3584862), (9, 2389908), (12, 1792431), (18, 1194954), (27, 796636), (36, 597477), (54, 398318), (79, 272268), (108, 199159), (158, 136134), (237, 90756), (316, 68067), (474, 45378), (711, 30252), (948, 22689), (1422, 15126), (2133, 10084), (2521, 8532), (2844, 7563), (4266, 5042)]