18894987

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2351}}^1$

素因数の和:2423

約数の個数: 24

約数和(自身を含む): 29352960

約数和(自身を除く): 10457973

約数列:

[1, 3, 9, 19, 47, 57, 141, 171, 423, 893, 2351, 2679, 7053, 8037, 21159, 44669, 110497, 134007, 331491, 402021, 994473, 2099443, 6298329, 18894987]

約数ペア:

[(1, 18894987), (3, 6298329), (9, 2099443), (19, 994473), (47, 402021), (57, 331491), (141, 134007), (171, 110497), (423, 44669), (893, 21159), (2351, 8037), (2679, 7053)]