21947240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{761}}^1$

素因数の和:882

約数の個数: 64

約数和(自身を含む): 57058560

約数和(自身を除く): 35111320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 103, 140, 206, 280, 412, 515, 721, 761, 824, 1030, 1442, 1522, 2060, 2884, 3044, 3605, 3805, 4120, 5327, 5768, 6088, 7210, 7610, 10654, 14420, 15220, 21308, 26635, 28840, 30440, 42616, 53270, 78383, 106540, 156766, 213080, 313532, 391915, 548681, 627064, 783830, 1097362, 1567660, 2194724, 2743405, 3135320, 4389448, 5486810, 10973620, 21947240]

約数ペア:

[(1, 21947240), (2, 10973620), (4, 5486810), (5, 4389448), (7, 3135320), (8, 2743405), (10, 2194724), (14, 1567660), (20, 1097362), (28, 783830), (35, 627064), (40, 548681), (56, 391915), (70, 313532), (103, 213080), (140, 156766), (206, 106540), (280, 78383), (412, 53270), (515, 42616), (721, 30440), (761, 28840), (824, 26635), (1030, 21308), (1442, 15220), (1522, 14420), (2060, 10654), (2884, 7610), (3044, 7210), (3605, 6088), (3805, 5768), (4120, 5327)]