21315796

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{2141}}^1$

素因数の和:2295

約数の個数: 24

約数和(自身を含む): 39584160

約数和(自身を除く): 18268364

約数列:

[1, 2, 4, 19, 38, 76, 131, 262, 524, 2141, 2489, 4282, 4978, 8564, 9956, 40679, 81358, 162716, 280471, 560942, 1121884, 5328949, 10657898, 21315796]

約数ペア:

[(1, 21315796), (2, 10657898), (4, 5328949), (19, 1121884), (38, 560942), (76, 280471), (131, 162716), (262, 81358), (524, 40679), (2141, 9956), (2489, 8564), (4282, 4978)]