21783388

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{45007}}^1$

素因数の和:45033

約数の個数: 18

約数和(自身を含む): 41902448

約数和(自身を除く): 20119060

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 45007, 90014, 180028, 495077, 990154, 1980308, 5445847, 10891694, 21783388]

約数ペア:

[(1, 21783388), (2, 10891694), (4, 5445847), (11, 1980308), (22, 990154), (44, 495077), (121, 180028), (242, 90014), (484, 45007)]