19746748

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 41094144

約数和(自身を除く): 21347396

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 103, 164, 167, 206, 287, 334, 412, 574, 668, 721, 1148, 1169, 1442, 2338, 2884, 4223, 4676, 6847, 8446, 13694, 16892, 17201, 27388, 29561, 34402, 47929, 59122, 68804, 95858, 118244, 120407, 191716, 240814, 481628, 705241, 1410482, 2820964, 4936687, 9873374, 19746748]

約数ペア:

[(1, 19746748), (2, 9873374), (4, 4936687), (7, 2820964), (14, 1410482), (28, 705241), (41, 481628), (82, 240814), (103, 191716), (164, 120407), (167, 118244), (206, 95858), (287, 68804), (334, 59122), (412, 47929), (574, 34402), (668, 29561), (721, 27388), (1148, 17201), (1169, 16892), (1442, 13694), (2338, 8446), (2884, 6847), (4223, 4676)]