18420388

素因数分解:

$2^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{2621}}^1$

素因数の和:2883

約数の個数: 24

約数和(自身を含む): 37001664

約数和(自身を除く): 18581276

約数列:

[1, 2, 4, 7, 14, 28, 251, 502, 1004, 1757, 2621, 3514, 5242, 7028, 10484, 18347, 36694, 73388, 657871, 1315742, 2631484, 4605097, 9210194, 18420388]

約数ペア:

[(1, 18420388), (2, 9210194), (4, 4605097), (7, 2631484), (14, 1315742), (28, 657871), (251, 73388), (502, 36694), (1004, 18347), (1757, 10484), (2621, 7028), (3514, 5242)]