20458972

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{1117}}^1$

素因数の和:1381

約数の個数: 24

約数和(自身を含む): 37877840

約数和(自身を除く): 17418868

約数列:

[1, 2, 4, 19, 38, 76, 241, 482, 964, 1117, 2234, 4468, 4579, 9158, 18316, 21223, 42446, 84892, 269197, 538394, 1076788, 5114743, 10229486, 20458972]

約数ペア:

[(1, 20458972), (2, 10229486), (4, 5114743), (19, 1076788), (38, 538394), (76, 269197), (241, 84892), (482, 42446), (964, 21223), (1117, 18316), (2234, 9158), (4468, 4579)]