21630519

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{331}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 32162832

約数和(自身を除く): 10532313

約数列:

[1, 3, 9, 53, 137, 159, 331, 411, 477, 993, 1233, 2979, 7261, 17543, 21783, 45347, 52629, 65349, 136041, 157887, 408123, 2403391, 7210173, 21630519]

約数ペア:

[(1, 21630519), (3, 7210173), (9, 2403391), (53, 408123), (137, 157887), (159, 136041), (331, 65349), (411, 52629), (477, 45347), (993, 21783), (1233, 17543), (2979, 7261)]