18836468

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{21701}}^1$

素因数の和:21743

約数の個数: 24

約数和(自身を含む): 38889984

約数和(自身を除く): 20053516

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 21701, 43402, 86804, 151907, 303814, 607628, 672731, 1345462, 2690924, 4709117, 9418234, 18836468]

約数ペア:

[(1, 18836468), (2, 9418234), (4, 4709117), (7, 2690924), (14, 1345462), (28, 672731), (31, 607628), (62, 303814), (124, 151907), (217, 86804), (434, 43402), (868, 21701)]