21189204

素因数分解:

$2^2\times 3^2\times {\mathrm{61}}^1\times {\mathrm{9649}}^1$

素因数の和:9720

約数の個数: 36

約数和(自身を含む): 54445300

約数和(自身を除く): 33256096

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 61, 122, 183, 244, 366, 549, 732, 1098, 2196, 9649, 19298, 28947, 38596, 57894, 86841, 115788, 173682, 347364, 588589, 1177178, 1765767, 2354356, 3531534, 5297301, 7063068, 10594602, 21189204]

約数ペア:

[(1, 21189204), (2, 10594602), (3, 7063068), (4, 5297301), (6, 3531534), (9, 2354356), (12, 1765767), (18, 1177178), (36, 588589), (61, 347364), (122, 173682), (183, 115788), (244, 86841), (366, 57894), (549, 38596), (732, 28947), (1098, 19298), (2196, 9649)]