21631671

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{283}}^1$

素因数の和:460

約数の個数: 32

約数和(自身を含む): 34080000

約数和(自身を除く): 12448329

約数列:

[1, 3, 9, 19, 27, 57, 149, 171, 283, 447, 513, 849, 1341, 2547, 2831, 4023, 5377, 7641, 8493, 16131, 25479, 42167, 48393, 76437, 126501, 145179, 379503, 801173, 1138509, 2403519, 7210557, 21631671]

約数ペア:

[(1, 21631671), (3, 7210557), (9, 2403519), (19, 1138509), (27, 801173), (57, 379503), (149, 145179), (171, 126501), (283, 76437), (447, 48393), (513, 42167), (849, 25479), (1341, 16131), (2547, 8493), (2831, 7641), (4023, 5377)]