21608037

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 37132992

約数和(自身を除く): 15524955

約数列:

[1, 3, 9, 11, 17, 33, 37, 51, 99, 111, 153, 187, 333, 347, 407, 561, 629, 1041, 1221, 1683, 1887, 3123, 3663, 3817, 5661, 5899, 6919, 11451, 12839, 17697, 20757, 34353, 38517, 53091, 62271, 64889, 115551, 141229, 194667, 218263, 423687, 584001, 654789, 1271061, 1964367, 2400893, 7202679, 21608037]

約数ペア:

[(1, 21608037), (3, 7202679), (9, 2400893), (11, 1964367), (17, 1271061), (33, 654789), (37, 584001), (51, 423687), (99, 218263), (111, 194667), (153, 141229), (187, 115551), (333, 64889), (347, 62271), (407, 53091), (561, 38517), (629, 34353), (1041, 20757), (1221, 17697), (1683, 12839), (1887, 11451), (3123, 6919), (3663, 5899), (3817, 5661)]